SUBJECT INDEX
INDUSTRIAL AND ENGINEERING CHEMISTRY
ANALYTICAL EDITION
VOLUME 12—1910
A
Abrasion of Dentifrices, Machine for Testing. R. W. Sm ith... 419 Absorptiometer, Thermoelectric, for Analytical Work. H. H. Willard
and G. H . Ayres... 287 Absorption Tubes for Microcombustions. A. N. Prater... 184 Acetone-Ether for Glass Drying. A. E. M arkham .. ... 748 Acetone-Petroleum Ether for Continuous Extraction of Aqueous
Solutions. M. Wayman and G. F. W right...: . . 91 Acetylene M icroanalysis in Gases. F. E. Blacet, A. L. Sellers, and
W. J. B laedel... 356
Ac id s
Aliphatic, Analysis of Mixtures of. S. T. Schicktanz, W. I. Steele,
and A. C. Blaisdell . .. 320
Fatty. M ethyl Esters of Higher Acids Separated by Fractional Distillation. F. W. W yman and Chas. Barkenbus... 658 Organic, Salts of. Microdetermination of Equivalent W eights by
Electrodialysis. K. H. Dittm er and R. G. G ustavson... 297 from Petroleum of Texas. Separation and Characterization.
H. G. Schutze, Billie Shive, and H. L. L ochte... 262 (See also kind of acid.)
Ag it a t o r s
Shaker, Magnetic. S. K iyom izu... 174 Stirrer of Glass with Ball Valve. Silvester L iotta... 173 Stirrer, Vapor-Proof, for Laboratory. George Calingaert... 51 Stirring Motor, Electric, for Laboratory. E. B. liershberg 293 Agricultural W astes, Fibrous, Cellulose Determination in. J. D.
Reid, G. H. Nelson, and S. I. Aronovsky... 255
Ai r . .
Analysis. Aspirating Unit for Collection of Samples. Leslie Silverman and W. B. W ardlow... 682 Aromatics D etected in, by Micromethod. G. R. Gilbert and R. E.
Tannich. (Correspondence, 767)... 433 Carbon Disulfide Microdetermination in, by Copper and Diethyl-
amine in 2-M ethoxyethanol. F. F. M orehead ... 373 Determination in Citrus Juices. II. J. Loefller... 533
LCO HO LS
Alcoholic Hydroxyl Group Identified by Nitrato and Pcrchlorato Cerate Anions. F. R. Duke and G. F. Sm ith... 201 Identification by Optical Properties of Esters of Carbanilic Acid.
B. T. Dewey and N. F. W itt...•.•••.•• 459 Poly-, Determined in Presence of Each Other by Quantitative
M ethod. Nelson Allen, H. Y. Charbonnier, and R. M. Coleman. 384 Polyhydric, Microscopic Identification of. J. A. Quense and W. M.
D ehn... 556 Aliphatic Acids. See Acids.
Alkalies Extracted from Rocks. Modification of J. Lawrence Smith Extraction, Using Barium Chloride as Flux. R. E. Stevens.^ 413 Alkalies. Weighing Flask for Precision Standardization of Strong
Alkalies in Absence of Carbon Dioxide. Paul Nahinsky and H. A.
Laitinen... 417 Alkaline Solutions, Determ ination of Sulfide Sulfur in, When Con
taining Other Sulfur Compounds (Correspondence). J. B. Lew is.. . 535 Aluminum, Cadmium Separated from Zinc by Granular Form of.
F. E. Townsend and G. N. Cade, Jr... 163
Aluminum Microdetermination by Photometric Fluorescence Meas
urement. C. E. White and C. S. Low e _. 229
Amides, Primary Aliphatic, Identified as Oxalates. C. A. M acKenzie
and W. T. R awles... 737
2-Aminoethanol. See Ethanolamine.
o-Aminophenol Estim ation in p-Aminophenol by Fluorescence Analy
sis. William Seaman, A. R. Norton, and O. E. Sundberg.. . . 403 Ammonia Titration in Presence of Boric Acid in Macro-, Semimicro-,
and Micro-Kjeldahl Procedures. E. C. W agner... 771 Aniline Points of Butane Hydrocarbons. C. G. Ludeman... 446 Aniline-Water Solutions, Analysis of. John Griswold ... 89 Animal Tissues, Chemical Constituents Localized in, by Microelec
trographic M ethod. Herman Yagoda... 698 Apparatus of American Origin. A Review. R. H. MQller... 571
Ar c s . . . .
Alternating Current High-Voltage Arc Circuit for Quantitative Spectrochemical Analysis of Dilute Solutions. A. E. Ruehleand
E. K. Jaycox... 260
of Iron for Spectrochemical Analysis. Morris Slavin ... 131 for Spectrographic Qualitative Analysis, with Graphite Elec
trodes. W . C. Pierce, O. It. Torres, and W. W. M arshall 41 Aromatics Detected in Air by Micromethod. G. R. Gilbert and R. E.
Tannich. (Correspondence, 767)... 433
Ar s e n i c
Estim ation in Copper. Bartholpw P ark . .• 9/
Microdetermination in Biological Materials by Colorimetric M ethod. A. L. Chaney and H. J. M agnuson . 691 Microdetermination by Cerimetric M ethod after Reduction with
Hypophosphite. I. M. Kolthoff and Elias A m dur... 177 Asbestos for Filtering M ats, Preparation of. B. L. K asp in. ... 517 A8h Microdetermination in Organic Compounds by Technique with
Automatic Combustion. A. R. Norton, G. L. Royer, and R.
K oegel... 121 Asphalt Gloss- and Stain Meter. A. P. Anderson and T. E . R eam er.. 423 Asphaltic Liquid Products, Kinematic Viscometer for. A. P. Ander
son, K. A. Wright, and R. L. Griffin... .. - 466 Aspirating Unit for Collecting Air Samples. Leslie Silverman and
W. B. W ardlow... 682 Aspirator Pump, Portable. R. C. H ockett... 539
Barium, Identification Limits of Simple Confirmatory T est for. A. A.B
Benedetti-Pichler and J. R. Rachele...
Base-Exchange Capacity of Soils and Other Materials Determined by Colorimetric Manganese M ethod. C. A. Bower and Em il T ru og.. . Benzene Microanalysis in Gases. F. E. Blacet, A. L. Sellers, and W.
J. Blaedel...
a-Benzoin Oxime for Copper Determ ination in Ferromolybdenum, Calcium M olybdate, etc. Louis Silverm an...
Beryllium Determ ination in Silicates. E. B. Sandell...
Beryllium Microdetcrmination with Morin. E. B. Sandell...
Bio l o g ic a l Ma t e r ia l
Arsenic M icrodetermination in, by Colorimetric M ethod. A. L.
Chaney and H. J. M agnuson...
Nitrogen Fixation by, Direct Estimation of. Charles Hurwitz and P. W. W ilson... ...
Sodium M icrodetermination in Fluids. M. C. Darnell, Jr., and B. S. W alker...
(See also kind of biological material.)
Bism uth Precipitation with Salicylaldoxime. J. F. Flagg and N. H.
Furman...
Bl o o d
Iodine Microdetcrmination in, by Improved M ethod. A. L.
Chaney 4...
Lactic Acid M icrodetcrmination in. Samuel Elgart and J. S.
Harris...
Lead Determ ination in, by Colorimetric Diphenylcarbazide M ethod. T. V. Letonoff and J. G. Reinhold...
Boiler Scale. See Water. . . . .
Bomb for Chlorine Microdetcrmination in Organic Compounds by Lime-Fusion M ethod. W. M. M acNcyin and W . H. B axley...
Bomb. Phosphorus Determination in Linseed Oil by Oxygen Bomb.
G. T. Piercy, E. K. Plant, and M. C. Rogers...
Boric Acid, Ammonia Titration in Presence of, in Macro-, Scmimicro-, and Micro-Kjeldahl Procedures. E. C. W agner...
Boron Determination in Plant M aterial. Ignition-Electrom etric Titration M ethod. L. V. W ilcox...
Brass Plating Solutions, Sodium Cyanide Analysis in. W. M.
M cNabb and Samuel H eim an...
Bread, Iron Content of Bread Ingredients and. Charles Hoffman, T. R. Schweitzer, and Gaston D alby...
Bromide Detection by System atic M ethod. David Hart and Robert M eyrow itz...
Bromine, Unsaturation in Aliphatic Hydrocarbon Mixtures Deter
mined by Absorption with. J. B. Lewis and R. B. Bradstrcet...
Büchner Funnel. See Funnel. ^
Buret of W eight Type, Locknut for. M artin K ilpatrick... ..
Butane Hydrocarbons, Critical Solution Temperatures and Aniline Points of. C. G. Ludem an...
Cadmium Separated from Zinc by Granular Aluminum. F. E. Town
C
send and G. N. Cade, Jr... ^...
Calcium Submicroestimation by Quantitative M ethod. A. E. Sobel and I. A. Kaye. (Correction, 311)... ..
Calcium M olybdate, Copper Determ ination in, by a-Benzoin Oxime.
Louis Silverm an... .-•••.•
Calcium Phosphate, Di-, as Adsorbent in Carotene Determination in Plant M aterial. L. A. M oore...
Carbanilic Acid Esters, Alcohol Identification by Optical Properties of. B. T. Dewey and N. F. W itt...
Carbohydrates, Carotene Determination Affected by. E. J. Lease and J. H. M itchell...
Ca r b o n Mic r o d e t e r m in a t io n . .
with Abrahamczik Absorption Tubes. R. O. Clark and G. II. Still- son...
by Combustion. Modified M ethod. G. L. Royer, A. R. Norton, and O. E. Sundberg...,...
in Organic Compounds by W et M ethod. E. F. Degering and T. Z.
B all...
in Organic Materials. B. E. Christensen, Robert Wong, and J. F.
Facer... .•
Semi-, in Aliphatic and Cyclic Compounds by Gas-Volumetric Method. E. Berl and W . Koerber... ,...
Semi-, in Organic Compounds, Apparatus for. Carl Niemann and
Vance Danford • • • •
Carbon Blacks for Rubber Evaluated by X -R ay Diffraction. G. L.
Clark and H. D. Rhodes...
Carbon Dioxide, Generator for, in Pure State. W. H. Rauscher...
Carbon Dioxide, Solid, Atmospheric Oxidation Prevented by. G. E.
Ferguson and Leopold ScheHan. ...*. * v Y Carbon Disulfide Microdetermination in Air by Copper and D iethyl- amine in 2-M ethoxyethanol. F. F. M orehead. ...
Carbon Monoxide Determ ination by Pyrogallic-Tannic Acid Method as Adapted to Standard Gas Analysis Equipment. Fred C ook.; . . . Carius M ethod, Furnace for Microdeterminations by. J. A. Kuck and Maurice Griffel... • Carius M ethod, Halogen and Sulfur Microdeterminations by. J. B.
Niederl, H. Baum, J. S. M cCoy, and J. A. K uck...
Ca r o t e n e
Adsorption by Magnesia. G. S. Fraps, A. R. Kemmerer, and S. M.
Greenberg...
786
411 356 343674 762 691 31 242 663 179 758 280 299 165 771 341 161 454 318 387 548 446
163 118 343 726 459 337 494
688
124 364 245 563 69466
276 373 661 125 428
233
16
DECEMBER 15, 1940 ANALYTICAL EDITION
Determination
Carbohydrate Effect on. E. J. Lease and J. H. M itchell... 337 in Plant Material. Dicalcium Phosphate as Adsorbent. L. A.
M oore... 726 in Plant Tissue. H. G. Petering, TV. TVolman, and R. P. Hib
bard . . ... 148 Carotenoid Pigm ents, M elting Point Determination of, by Microscope
Hot Stage. F. P. Zscheile and J. TV. W hite, Jr... 436 Castor Oil. W ijs Iodine Numbers for Conjugated Double Bonds.
W. C. Forbes and H. A. N eville... 72 Catalysts. Feed Device with Precise Scale for Catalytic Experiments. R. L. Burwcll, Jr... 681 Catalytic Developm ent Company, Houdry Laboratories of. H. P.
Broom ... 778
Ce l l u l o s e
Cotton Degradation Measurement in Dim ethyl Dibenzyl Ammo
nium Hydroxide. TV. W. Russell and N. T. W oodberry... 151 Determ ination in Agricultural W astes with M onoethanolamine.
J. D. Reid, G. H. Nelson, and S. I. Aronovsky... 255 M oisture Determ ination in, by Titrimetric M ethod Using Karl
Fischer Reagent. John M itchell, Jr... 390 Cement Determ ination in D ust Samples by Microscopic M ethod.
I. A. Pearl...; • • • • ... 492 Cement, Silica and R2OJ Determined in. L. R. Dawson and R. V.
Andes... 138 Centrifuge Cooling Unit. H. L. W underly and L. S. Sm elo... 754
Ce r a t e
Nitrato and Perchlorato, as Test Reagents in Rapid Test for Alco- hojic Hydroxyl Group. F. R. Duke and G. F. Sm ith... 201 Oxidimetry. Electrolytic Oxidation of Cerium without D ia
phragm Cell. G. F. Smith, Gerald Frank, and A. E. K ott 268 Oxidimetry. Preparation and Stability of Solutions. G. F. Smith
and C. A. G etz... 339
Ce r i c Su l f a t e
Arsenic Microdetermination with, after Reduction with Hypophos- phite. I. M. Kolthoff and Elias Amdur... 177 Glycerol Determ ination by Oxidation with, in Fermentation Media
Containing Dextrose. E. I. Fulmer, R. J. Hickey, and L. A.
Underkofler. ...*•• •... 729 in Potassium Microdetermination by Cobaltinitrite, Evaluation of.
Bernard Klein and Mendel Jacobi... 687 in Potassium Microdetermination by Cobaltinitrite, Iodometric
Evaluation of. I. A. K aye... 310
Cii a r t8
Nomograph for Lactometer Correction, and Calculation of Milk Solids. L. M. Lamport... 527 Tie Lines in Ternary Liquid Systems. Irvin Bachm an... 38 Tie Lines in Two-Liquid-Phase Systems. A. V. Brancker, T. G.Hunter, and A. TV. N ash... 35 Chemicals, Analytical Reagent, Recommended Specifications for.
A. C. S. Committee, W. D. Collins, Chairman... 631 Chloride Detection by System atic M ethod. David Hart and Robert
M eyrowitz... 318 Chloride Pattern in Plant and Animal Tissues Localized. Micro-
clectrographic M ethod. Herman Y agoda... 698 Chlorine Determ ination in W ater by Iodine-a-Naphthoflavone Ad
sorption Reaction. F. J. H allinnn... 452 Chlorine M ierodctcrmination in Organic Compounds with Bomb, by
Limc-Fusion M ethod. W. M. M acNevin and TV. H. Baxley 299 Chlorophyll Determination in Plant Tissue. II. G. Petering, W. TVol
man, and R. P. Hibbard... 148 Chromium Determ ination in Steels of 18-8 Alloy Type. Rapid Se
quence Titration with Manganese and Nickel. Louis Silverman and Owen G ates... 518 Citrus Juices, Air Determ ination in. II. J. Loefiler... 533
Co a l
Carbon Content of Aliphatic and Cyclic Compounds from. Gas- Volumetric Semimicrodetermination. E. Bcrl and W. K oerbcr.. 245 Hydrogenation Products. Microdetermination of Saturated Ali-
i
ihatic, Aromatic, and Hydroaromntic Hydrocarbons of Cyclotexane Series. E. Berl and W. Kocrber... 175 Sulfur Determination in. II. L. Brunjes and M. J. M anning 718 Coal Tar. Sec Tar.
Cobalt Determ ination with /3-Nitroso-a-Naphthol by Colorimetric M ethod. J. H. Yoc and C. J. Barton... 405
Co b a l t i n i t r i t e f o r Po t a s s iu m De t e r m i n a t i o n
Micromethod with Ceric Sulfate. Bernard Klein and Mendel
Jacobi... 687
Micrometliod with Ceric Sulfate. Iodometric Evaluation of Prc- cipitate. I. A. K a y e. ... 310 in Water as Potassium-Sodium Cobaltinitrite Precipitate. R. J.
Robinson and J. D. H auschildt ... 676 Cod Liver Oil, Vitamin A Potency of, Estimated by Spectrographic
Method. R. L. McFarlan, P. K. Bates, and E. C. M errill... 645 Coke, Sulfur Determ ination in. H. L. Brunjes and M. J. M anning. . . 71S Colorimetry. Absorptiometer of Thermoelectric Type for Analyti
cal Work. II. H. Willard and G. H. A yres... 287 Colorimetry. Two-Component Color System Analyzed. H. W.
Knudson, V. W. Meloche, and Chanccy Juday... 715 Columns. See Distillation.
Combustion B oat Tongs, New Design of. II. F. Priest... 473 Controllers, Automatic. A Review. R. H. M üller... 604 Cooling Unit for Centrifuge. II. L. Wunderly and L. S. Sm elo... 754 Coordinating Measuring Instruments and Apparatus. A Review.
R. II. M üller... 614
Co p p e r
Arsenic Estim ation in. Bartholow Park... 97 Determination
in D yes and Other Organic Materials. G. F. Palfrey, R. H. IIo- bert, A. F. Benning, and I. W. Dobratz... 94 in Ferromolybdenum, Calcium M olybdate, etc., by a-Benzoin
Oxime. Louis Silverm an... 343 by Iodofluoridc M ethod. Effects of Antimony, Aluminum, and
Calcium. W. R. Crowell and A. T. Spiher... 147 by Silver Reductor. Nathan Birnbaum and S. M. Edm onds 155 in Steel by Electrolytic M ethod. H. A. Frediani and C. H. Hale.. 736 with Triethanolamine by Colorimetric M ethod. J. H. Yoe and
C. J. Barton... 456 M icrodetermination by Electrolytic M ethod, Precision of. W. M.
M acNevin and R. A. Bournique ... 431
M icrodetermination in Mineral Oils. Titrimetric Extraction, Us
ing Dithizone. A. G. Assaf and W. C. H ollibaugh... 695 Corrosion Teats of Naphtha Affected by Presence of Sulfur and Sulfur
Compounds. L. M. Henderson, M. S. Agruss, and G. W. Ayers, Jr. 1
Cotton Cellulose Degradation Measurement in Dim ethyl Dibcnzyl Ammonium Hydroxide. W. W. Russell and N. T. W oodberry...
Cottonseed Oil, Gossypol Determination in. II. D. Roycc, J. R.
Harrison, and P. D. D eans...
Crucible of M agnesite, Improved. W. J. Crook, J. R. Cunningham,and J. R. C ady...
Cryostat. See Temperature.
Crystallization, H ot Simple M ethod for. J. W. Dawson and W. M.D ch n . ...
Crystallization. Microapparatus for Fractional Recrystallization.L. C. Craig...
Cyclohcxane Hydrocarbons. Microdetermination of Saturated Ali
phatic, Aromatic, and Hydroaromatic Hydrocarbons. E. Berl and W. Koerbcr...
Cyclopentane Hydrocarbons. Dehydrogenation and Nitration by Micromethod. E. Berl and Regis R aab...
D
Densitometer, Micro-, with Photoelectric Cell. M. Spiegcl-Adolfand R. H. Peckham ...
Density. See Specific Gravity.
Dentifrice Abrasion, Machine for Testing. R. W. Sm ith...
Derris, Rotenone Determ ination in. T. M. Meijer and D. R. Kool
haas...
Dicalcium Phosphate. See Calcium Phosphate.
2,6-Dichlorobenzenoneindophenol. See Indophenol.
Djhydrorotcnone. See Rotenone.
Dim ethyl Dibenzyl Ammonium Hydroxide (Triton F), Cotton Fluid
ity in. W. W. Russell and N. T. W oodberry...
Di-0-NaphthyIthiocarbazone for Mercury Microdetermination in Urine by Photometric M ethod. D. M . H ubbard...
Diphenylcarbazide for Lead Determination in Blood, Tissues, and Ex
creta by Colorimetric M ethod. T. V. LetonofT and J. G. Reinhold..
Dipicrylaminc, Potassium Determination by, in Photometric M ethod.
Elias Amdur...
Dis t il l a t i o n
Columns
of High Efficiency and Low Holdup for Laboratory. M. L.
Selker, R. E. Burk, and II. P. Lankelina...
Packing of Spiral Screen Type for Efficient Laboratory Frac
tionations. H. S. Lecky and R. II. Ew ell...
Rectification, for Chemical Engineering Laboratory. J. R.
Huffman and R. E. Treybal...
of Spinning-Band Type for Fractionating Small Quantities of Liquids. R. II. Baker, Chas. Barkenbus, and C. A. R osw ell.. . Fatty-Acid M ethyl Esters Separated by. F. W. W yman and Chas.
Barkenbus...
Flask, Constant Levels M aintained in. F. E. H olm es...
Pressure Regulator for Vacuum Distillatipn. M. S. N ewm an...
Receiver with Jacket, for Vacuum Distillation. J. B. Cloko.
(Correspondence, 744)...
Stills
of Glass with Automatic Float Feed. G. F. Liebig, Jr...
of Molecular or Short-Path Type for Vegetable and Animal Fats and Oils. S. B. Detwiler, Jr., and K. S. M arkley...
for Water Distillation in M etal-Free State. J. S. McIIargue and E. B. Offutt...
of Water, Glycerol Effect on. R. B. Trusler...
Dithizone for Copper Microdetermination in Mineral Oils. A. G.
A ssaf and W. C. Hollibaugh...
Dithizone, Lead and Thallium Traces Estimated in Pharmaceutical Chemicals by. Karl Bam bach...
Doctor Test of Naphthas. Effect of Sulfur and Sulfur Compounds on. L. M. Henderson, M. S. Agruss, and G. W. Ayers, Jr...
Dry Ice. See Carbon Dioxide, Solid.
Drying Rates, Apparatus for Study of. Continual Observation of Changes in W eight at Oven Temperatures. A. C. Beckel and A. G.
Sharp...
Dumas Method. See Nitrogen.
Dust, Cement Determination in, by Microscopic M ethod. I. A.
Pearl...
D ye Adsorption by Colloidal Ferric Oxide as Gage of Adsorption Power. F. II. Dotterweich with W. J. H uff...
Dyes, Copper and Manganese Determined in. G. F. Palfrey, R. H.
Ilobcrt, A. F. Benning, and I. W. Dobratz...
E
Ehrlich’s Reaction. See Indole.
Electrical Instruments. A Review. R. II. M üller...
Electrodes, Dropping, Mercury Constant Head on. E. F. M ueller....
Electrodes, Dropping, in Spectrographic Analysis by Solution M ethod. R. J. Keirs and D. T. Englis...
Electrometer of Vacuum Tube Type, and Universal pH Meter. F.
M. Goyan, C. L. Barnes, and H. W. H ind...
Electronic Instruments. A Review. R. H. M üller...
Electronic Relay. C . E. Rudy, Jr., and Paul F ugassi...
Electrophoresis Cell, Micro-, of Pyrex Glass. D. R. Briggs...
Emich, Friedrich. Founder of Microchemistry. A. A. Benedetti- Pichler...
Emulsifying Efficiency, Determination of. L. II. Cohan and Norman Hackerman...
Enamel, Black, Analysis of. S. E. Berkenblit...(See also
Paint.) _
Esters, M ethyl, of Higher Fatty Acids Separated by Fractional D is
tillation. F. W. Wyman and Chas. Barkenbus...
Ethanolamine (2-Anxinoethanol) Identification. Bernhard K eiser....
Ether-Acetone for Glass Drying. A. E. M arkham...
E thyl Gasoline Corporation, Chemical Research Laboratory of. II.
A. R oattv...
Ethyl Vanillin Determination in Vanilla Extract. H. W. Chenoweth Ethylene Glycol Determination in Lubricating Oil. II. Lamprey, E. E. Sommer, and A. D. Kiffer...
Ethylene Glycol Determ ination in Presence of Glycerol. Nelson Allen, H. Y. Charbonnier, and R. M. Colem an...
Excrement, Lead Determ ination in, by Colorimetric Diphenylcar
bazide M ethod. T. V. Letonoff and J. G. Reinhold...
Extraction Tube of Rohrig Type, M odification of. C. W. Sullens and W. R ankin...
Extractor for Fluids in Laboratory. G. W . Irving, Jr., and T. W.
Loring...
151 741 48 317 773 175 177
787
182 419 205
151 768 280 731
352 544 745 468 483658 274 329 174 348 509157 695 63
1
45 492 277 94
584171 275 485584 757703 226
210453 284658 748 18598 526 384 280 291
5 4 8
788 INDUSTRIAL AND ENGINEERING CHEMISTRY VOL. 12, NO. 12
Fa t s F
Commercial. Analyses Recommended. A. C. S. Committee, V. C.
Mehlenbacher, Chairman... 379
Filter Aids for. A. L. Olsen... 254
Vegetable and Animal, Molecular or Short-Path Still for. S. B. Detwiler, Jr., and K. S. M arkley... 348
F atty Acids, Higher. M ethyl Esters Separated by Fractional D is tillation. F. W. W yman and Chas. Barkenbus... 658
Feeding Device for Catalytic Experiments, with Precise Scale. R. L. Bur well, Jr ... 681
FeedstufFs, Iodine Microdetermination in, by Improved Apparatus.F. X . Gassner... 120
Feldspar, Quartz Determination in. G. H. M cIntyre and M . Bozsin 326 Ferric Oxide, Colloidal, Adsorption Power Gaged by D ye Adsorption. F. H. Dotter weich with W. J. H uff... 277
Ferric Sulfate, Kjeldahl Digestion Time Shortened by Use of. F. M. Stubblefield and E. E. D eTurk... 396
Ferrocyanide Ion, Microidentification of. W. C. Oelke... 498
Ferromolybdenum, Copper Determ ination in, by a-Benzoin Oxime. Louis Silverman... . ... 343
Fertilizer. Acidity or Basicity Equivalents Determined by Routine M ethod. E. W. Constable... 214
Fiber, Crude, Determ ination of. Potassium Sulfate as Filtration Aid. A. M. Neubert, Fred VanAmburgh, and J. L. St. John... 451
Fil t r a t i o n Ap p a r a t u s Aids for Fat Filtration. A. L. O lsen... 254
Funnel, Büchner, for Organic Qualitative Analysis. C. A. Roswell 350 for H ot Saturated Solutions. J. W. Dawson and W. M . D ehn 317 M ats, Asbestos Prepared for. B. L. K aspin... 517
with M otor Attachm ent. J. F. King and H. F. Priest... 418
Pressure Filter of Leaf Type for Laboratory. T. F. Clark, N. Por- ges, and S. I. Aronovsky... 755
of Suction Type for Sampling Filtrates under Constant Pressure. E. T. Fukunaga and L. A. D ean... 471
Fischer Reagent. See Water. Fish Liver Oils. Vitamin A Assay with Photoelectric Colorimeter. R. B. French... 351
Fish Liver Oils. Vitamin A Determ ination by Spectrophotometry. D . T. Ewing, J. M. Vandenbelt, A. D. Em m ett, and O. D. Bird 639
Flask, Volumetric, of 10-Liter Capacity. F. J. R eithel... 159
Flow Divider for Gases. J. H . Bruun... 172
Flow Regulator, Automatic, for Constant Low Gas Flows. Leslie Silverm an... 292
Flowmeter, Capillary. H. N. A lyea... 686
Fluid Extractor for Laboratory. G. W. Irving, Jr., and T. W. Lor- in g... 548
Fluorine Determ ination by Amperometric Titration with Thorium Nitrate. Alois L anger. ... 511
Food. Iron Microdetermination in Liquid Products. H. L. Rob erts, C. L. Beardsley, and L. V. Taylor, Jr... 365
Formaldoxime for Manganese Determ ination by Colorimetric Micro method. C. P. Sideris... 307
Fractionation. See Distillation Funnel, Büchner, for Organic Qualitative Analysis. C. A. Roswell 350 Fu r f u r a l Determination by Photocolorimetrio M ethod. R. A. Stillings and B. L. Browning... 499
Microdetermination from Pentose-Acid Reactions. R. E. Reeves and Jackson M unro... 551
Recovery from Aqueous Solutions. Floyd Trimble and A. P. Dunlop... 721
Furnace, Electric, of High-Tcmperature Resistance Type for Labora tory. W . M. Hazel and W. J. O’Leary... 109
Furnace for Micro-Carius Determ ination. J. A. Kuck and Maurice Griffel... 125
Galvanometer Oscillations Reduced by Condenser, in PolarographieG Measurements. J. J. Lingane and Herbert Kerlinger... 750
Ga s e s Apparatus and Instruments for Measurement and Control of. R. H . M üller... 581
Evolved-Gas Measurement by Continuous Automatio Apparatus. M . L. Crossley, R. H. Kienle, and C. H. Benbrook... 216
Flow Divider for. J. H. Bruun... 172
Flow Regulator for M aintaining Constant Low Flows. Leslie Silverm an... 292
Gasometer for M icro-Dum as Determ inations. J. G. Sandza and J. F. A licino... 776
M icroanalysis. Acetylene, Benzene, and Some Procedure Modifi cations. F. E. Blacet, A. L. Sellers, and W. J. Blaedel... 356
Saturator in Compact Form. A. E. M arkham... 112
Saturator of High Versatility for. W. R. Rinelli and K. S. W illson.. 549
Sulfur, Organic, Determined in Combustible Gas. F. M . Rogers and R. F. Baldaste... 724
Tanks, Portable, for Gas under Low Pressure. G. R. Robertson. . 686
Gelatin-Silver Photographic Paper as Reagent in Spot Analysis. G. Schwarz... 369
General Foods Corporation, Research and D evelopm ent Labora tories of. T. M . Rector... 247
Gl a s s Apparatus and Instruments. A Review. R. H . M üller... 602
Cleaning with W etting Agents. W. H. W hite... 550
Drying with Acetone-Ether Mixtures. A. E. M arkham... 748
Electrophoresis Cell, Micro-, of Pyrex. D. R. Briggs... 703
Powdering, Mortar and Pestle for. H. L. W underly. ... 284
Spheres, Microscopic, Preparation of. C. R. Bloomquist and A. Clark... 61
Static Charges on, Rem oved by Ultraviolet Light. C. J. Rodden. (Correction, 775)... 693
Still with Automatic Float Feed. G. F. Liebig, Jr... 174
Stirrer with Ball Valve. Silvester L iotta... 173
Sulfur Removal from. H . S. W ilson... 415
Tubing, H ot Wire Cutter for. A. A. H irsch... 48
Gl o s s Me a s u r e m e n t of Asphalt, Meter for. A. P. Anderson and T. E. Ream er... 423
of Paint. L. A. Wetlaufer and W . E. Scott... 647
of Paint. M eter for Distinctness-of-Image Measurement. R. J. M yers... 678
Glutamine Determination in Plant Tissues. G. W. Pucher and H . B. Vickery... 27
Gl y c e r o l Determ ination by Oxidation with Ceric Sulfate in Fermentation M edia Containing Dextrose. E. I. Fulmer, R. J. Hickey, and L. A. Underkofler... 729
Determination in Presence of Ethylene Glycol. Nelson Allen, H. Y. Charbonnier, and R. M. Colem an... 384
Effect on Water Determination by D istillation M ethod. R. B. Trusler... 509
Gossypol Determination in Cottonseed Oil. H. D. Royce, J. R. Harrison, and P. D . D eans... 741
Grease. See Lubricants. Grignard Reagent for Hydrogen Microdetermination by Gravimetric M ethod. Application to Analysis of Impregnated Paper Insulating Tapes. R. N. Evans, J. E. Davenport, and A . J. R evukas... 301
Grignard Reagent for Hydroxyl Determination. W alter Fuchs, N. H. Ishler, and A. G. Sandhoff... 507
H Halogen M icrodetermination by Carius M ethod. J. B. Niederl, H. Baum, J. S. M cCoy, and J. A. K uck... 428
He a t Ap p a r a t u s Control Units. J. A. R iddick... 222
Electric Flask Heater with High Output. H. A. Krantz and R. W. Hufferd... 752
(See also Temperature.) Houdry Laboratories. See Catalytic Developm ent Company. Hy d r o c a r b o n s Aliphatic Acids, Analysis of Mixtures of. S. T. Schicktanz, W. I. Steele, and A. C. Blaisdell... 320
and Cyclic, Carbon Semimicrodetermination in, by Gas-Volu metric W et M ethod. E. Berl and W. Koerber... 245
Unsaturation Determined in, by Bromine Absorption. J. B. Lewis and R. B. Bradstreet... 387
Aromatic, Detection of, in Air by Micromethod. G. R. Gilbert and R. E. Tannich. (Correspondence, 767)... 433
of Butane Series, Critical Solution Temperatures and Aniline Points of. C. G. Ludeman... 446
of Cyclohexane Series. Microdetermination of Saturated Aliphatic, Aromatic, and Hydroaromatic Compounds. E. Berl and W. Koerber... 175
of Cyclopcntane Series. Dehydrogenation and Nitration by Micromethod. E. Berl and Regis R aab... 177
Paraffinic M ixtures Analyzed by Raman Spectra. A. V. Grosse, E. J. Rosenbaum, and H. F. Jacobson.. ... 191
Paraffins, Primary Mononitro-, Determined Colorimetrically. E. W . Scott and J. F. Treon... 189
(See also Organic Compounds, Petroleum, and kind of hydrocar bon.) Hy d r o g e n Determination as Exchangeable Hydrogen in Unsaturated Soils, by Potentiometrie M ethod. K. A. M aehl... 24
Microdeterminati on with Abrahamczik Absorption Tubes. R. O. Clark and G. H. Stillson... 494
in Active Form by Gravimetric M ethod Using Grignard Reagent. Application to Analysis of Impregnated Paper Insulating Tapes. R. N . Evans, J. E. Davenport, and A. J. Revukas. .. 301
by Combustion. Modified M ethod. G. L. Royer, A. R. Norton, and O. E . Sundberg... 688
Semi-, in Organio Compounds, Apparatus for. Carl Niemann and Vance Danford... 563
Hydrogen-Ion Concentration. Patent Blue V as pH Indicator (Correction). J. H. Yoe and G. R. Boyd, Jr... 399
Hydrogen-Ion Concentration. pH Meter and Vacuum Tube Elec trometer. F. M. Goyan, C. L. Barnes, and H. W . H ind... 485
Hydrogen Peroxide. See Peroxide. Hydrogen Sulfide Determ ination in Gases and Aqueous Solutions. J. A. Shaw... 668
Hydrogenation Apparatus, Micro-. A. N . Prater and A. J. Haagen- Sm it... 705
Hydroxyl, Alcoholic, Nitrato and Perchlorato Cerate Anions as Test Reagents for. F. R. Duke and G. F. Sm ith... 201
Hydroxyl Determination with Grignard Reagent. W alter Fuchs, N . H. Ishler, and A. G. Sandhoff... 507
Hypophosphite, Arsenic M icrodetermination by Ceriraetric M ethod after Reduction with. I. M . Kolthoff and Elias Amdur... 177
I Indium M icrodetermination. G. L. R oyer... 439
Indole Determined Quantitatively by M odification of Ehrlich’s Re action. L. H. Chernoff... 273
Indophenol, 2,6-Dichlorobenzenone-, Solutions Prepared in Stable Form. Irwin Stone... 415
Inhalation, Nebulizer for Experiments on. R. J. M ain... 117
Inoculation Procedure, Simplified. T. L. Black and Aaron A rn old.. 344
Instruments and Instrumentation, of American Origin. A Review. R. H. M üller... 571
Insulation for Cables. Hydrogen M icrodetermination in Impreg nated Paper Tapes by Gravimetric Method with Grignard Re agent. R. N. Evans, J. E. Davenport, and A. J. R evukas... 301
Io d id e Detection by System atic M ethod. D avid Hart and Robert Meyro- w itz... 318
Microdeterminati on. Oxidation-Reduction Reaction Catalyzed by Iodine. David Hart and Robert M eyrowitz... 774
-Starch M ethod of Ozone Analysis. C. E. Thorp... 209
Io d i n e Determination in Thyroid. Elim ination of Uncertain End Point and Blank in U. S. P. X I Assay. R. S. Burnett and R. F. War- kow ... 734
Microdetermination in Blood by Improved M ethod. A. L. Chaney 179 Microdetermination in Feedstuffs, Apparatus for. F. X . Gassner. . 120
Wijs M ethod. J. W. M cCutcheon... 465
Wijs Number for Conjugated Double Bonds. W. C. Forbes and H . A. N eville... 72
Iodofluoride M ethod for Determination of Copper. Effects of Antimony, Aluminum, and Calcium. W. R . Crowell and A. T. Spiher...; ... 147
DECEM BER 15, 1940 ANALYTICAL EDITION 789
Iron
Cast, M olybdenum Determination in. Calvin Sterling and W . P.
Spubr ... 33
Determ ination in Bread and Bread Ingredients. Charles Hoffman, T. R. Schweitzer, and Gaston D alby... 454
Determ ination with Salicylaldoxime by Colorimetric Spectro- photometric M ethod. D . E. Howe with M. G. M ellon... 448
Identification Limits of Simple Confirmatory Test for. A. A. Benedetti-Pichler and J. R. R achele... 233
M icrodetermination in Food Products in Liquid Form. H. L. Roberts, C. L. Beardsley, and L. V. Taylor, Jr... 3G5 M icrodetermination with Silver Reductor. S. M . Edmonds and Nathan Birnbaum... GO (See also Steel.) Jones Reductor. See Reductor. K Kiln, Rotary, Heated Electrically. E. P. Barrett, W . L. Barrett, and P. R. Porath... G84 Kj e l d a h l Me t h o d Ferric Sulfate for Shortening Time of. F. M . Stubblefield and E . E. D eT urk... 396
Micro-, Semimicro-, and Macro-. Titration of Ammonia in Presence of Boric Acid, Using M ethyl Red Indicator and Color- M atching End Point. E. C. W agner... 771
Selenium Effect in. R. B. Bradstreet... G57 for Viscous Liquid Analysis. Flat-Bottom ed Microcups as Weigh ing Bottles and Reaction Vessels. G. E. Ferguson and Leopold Scnefian... 553
L La b o r a t o r ie s, Mo d e r n Catalytic Developm ent Company. H. P. Broom ... 778
E thyl Gasoline Corporation. H. A. B eatty... 185
General Foods Corporation. T. M . Rector... 247
M ines, Bureau of. R. S. D ean... 708
M ontana State University. J. W. Howard... 441
North Dakota University. Irvin Lavinc and A. M . Cooley, J r ... 567
Purdue University. J. L. B ray... 375
Standard Oil Company of California. R...A. Halloran... 312
Lactic Acid M icrodetermination in Blood. Samuel Elgart and J. S. H arris... 758
Lactometer. See M ilk. Le a d De t e r m i n a t i o n in Blood, Tissues, and Excreta by Colorimetric M ethod with Di- phenylcarbazide. T. V. Letonoff and J. G. R einhold... 280
in Paints by Polarographic M ethod. B. M . Abraham and R. S. H u ffm a n ... 65G in Pharmaceutical Chemicals by D ithizone Limit Test. Karl Bam bach... 63
Length, Apparatus and Instruments for Measurement of. R. II.MUller... 574
Linear Displacement, Apparatus and Instruments for Measurement of. R. H . M uller... 574
Linoleic Acids. Wijs Iodine Numbers for Conjugated Double Bonds. W . C. Forbes and H . A. N eville... 72
Linseed Oil, Phosphorus Determ ination in, by Oxygen Bomb. G. T. Piercy, E. K. Plant, and M . C. Rogers... 165
Liq u id s Feed Device for, in Catalytic Experiments. R. L. Burwell, Jr.. . . 681
Ternary Systems of, Tie Lines in. Irvin Bachm an... 38
Two-Phase Systems of, Tie Lines in. A. V. Brancker, T. G. Hunter, and A. W. N ash... 35
Lu b r ic a n t s Grease Consistency Measured by M obilometer in Fluid and Semi fluid State. K. C. Combes, C. S. Ford, and W. S. Schaer 285
Oils, Ethylene Glycol Detection and Determination in. H. Lam prey, E. E. Sommer, and A. D. Kiffer... 526
Oils. Sludge Determ ination in Used or Oxidized M otor Oils. C. G. Ludeman... 520
M Magnesia, Carotene Adsorption by. G. S. Fraps, A. R. Kemmerer, and S. M . Greenberg... 16
M agnesite Crucible, Improved. W. J. Crook, J. R. Cunningham, and J. R. C ady... 48
M agnesium Determ ination with p-Nitrobenzeneazoresorcinol. Effect of Diverse Ions. J. P. Melilig and K. R. Johnson... 30
Magnesium M icrodetermination by Colorimetric M ethod. C. P. Sideris... 232
M agnetic Shaking D evice. S. K iyom izu... 174
Ma n g a n e s e Determ ination in Dyes and Other Organic Materials. G. F. Palfrey, R. H. IJobert, A. F. Benning, and I. W. D obratz 94 Determ ination in Steels of 18-8 Alloy Type. Rapid Sequence Titration with Chromium and Nickel. Louis Silverman and Owen G ates... 518
Microdetermination by Forinaldoxime Colorimetric M ethod. C. P. Sideris... 307
Mass, Apparatus and Instruments for Determ ination of. R. H. M U ller... 576
M elting Point Determination of Carotenoid Pigm ents by Microscope H ot Stage. F. P. Zscheile and J. W. W hite, Jr... 436
M enthols, Isomeric, Separation and Determination of. R. T. Hall, J. H. Holcomb, Jr., and D . B. Griffin... 187
M ercaptan Sulfur Determ ination in Gases and Aqueous Solutions. J. A. Shaw... 668
Mercury M icrodetermination by M odification of Rauscher’s M ethod. Anthony Shukis, Jr., and R. C. Tallm an... 123
Microdetermination in Urine. Photometric M ethod with Di-/3- Naphthylthiocarbazone. D. M . Hubbard... 768
for Sealing Vessels for Storage of Solutions. F. E. H olm es 425
M ethionine Determination in Mixtures. J. J. Kolb and Gerrit Toennies... 723
Methylpropene Determination by Modified Denig^s Reagent. A. Newton and E. J. Buckler... 251
Mic r o c h e m is t r y Apparatus and Instruments for. A Review. R. H. MUller 620 Apparatus for Sem iqualitative Analysis. H. H. Barber... 58
Emich, Friedrich, Founder of. A. A. Benedetti-Pichler... 226
Identification Limits of Simple Confirmatory Tests. A. A. Bene detti-Pichler and J. R. R achele... 233
Microgram and Millimicrogram Terms Defined... 359
Organic Qualitative Analysis by Systematic Scheme Refractive Index of Liquids Determined. II. K. Alber and J. T. Bryant... 305
Specific Gravity Determined...H. K. Alber... 764
Microscope, Polarizing, Adapted for Use as Polarimeter. Alexander M arion... 777
M ilk Solids, Nomograph for Correction of Lactometer Readings and Calculation of. L. M. Lam pert... 527
Mines, Bureau of, M etallurgical Laboratories. R. S. D ean... 708
M obilometer. See Viscosity Apparatus. M old on Paints. Resistance to Growth Tested. A. M. Partansky and R. R. M cPherson... 443
Molecular Still for Vegetable and Animal Fats and Oils. S. B. Detwiler, Jr., and K. S. M arkley... 348
M olybdenite Minerals, Rhenium Determination in. C. F. Hiskey and V. W. M eloche... 503
M olybdenum Determ ination in Steel and Cast Iron. Calvin Ster ling and W. P. Spuhr... 33
M ontana State U niversity’s New Chemistry-Pharmacy Building. J. W. Howard... 441
Morin, Beryllium Microdetermination with. E. B. Sandell... 762
N Naphtha Corrosion Tests Affected by Sulfur and Sulfur Compounds. L. M . Henderson, M. S. Agruss, and G. W. Ayers, Jr... 1
Naphthenic Acids, Analysis of. J. R. M. Klotz and E. R. Littmann 76 2-Naphthol-Azoxylene, Reduction of. W illiam Seaman, A. R. Norton, and J. H ugonet ... 464
Nebulizer for Inhalation Experiments. R. J. M ain... 117
Nessler Reagent, Preparation of. A. P. Vanselow... 516
Nickel Determination in Steels of 18-8 Alloy Type. Rapid Sequence Titration with Manganese and Chromium. Louis Silverman and Owen G ates... 518
Nitrato Cerate. See Cerate. Nitrite Nitrogen Standards. W. F. Reindollar... 325
p-Nitrobenzeneazoresorcinol (S. and O. Reagent) for Magnesium Determination. Effect of Diverse Ions. J. P. M ehlig and K. R. Johnson... 30
Nit r o g e n Dumas Microdetermination, Gasometer for. J. G. Sandza and J. F. Alicino... 776
Dumas Semimicromethod for Difficult Organic Compounds. A. R. Ronzio... 303
Evolved, Measurement by Continuous Autom atic Apparatus. M. L . Crossley, R . H. Kienle, and C. H...Benbrook... 216
Fixation, Biological, Direct Estim ation of. Charles Hurwitz and P. W. W ilson... 31
Nitrite Nitrogen Standards. W. F. Reindollar... 325
(»See also Kjehldahl Method.) Nitron in Gravimetric Determ inations. Possible Source of Error When Used with Hydrogen Peroxide. R. C. Young and P. M. Bernays... 90
Nitroparaffins, Primary Mono-, Determined Colorimetrically. E. W. Scott and J. F. Treon ... 189
o-Nitrophenol Estimation in p-Nitrophenol by Fluorescence Analysis. W illiam Seaman, A. R. Norton, and O. E. Sundberg... 403
/S-Nitroso-a-Naphthol for Cobalt Determination by Colorimetric M ethod. J. H. Yoe and C. J. Barton... 405
Nomograph. See Charts. North Dakota University’s New Chemical Engineering Building. Irvin Lavine and A. M . Cooley, Jr... 567
o Oil s Analysis by Wijs Iodine M ethod. J. W. M cCutcheon... 465
Castor and Tung. Wijs Iodine Numbers for Conjugated Double Bonds. W. C. Forbes and H. A. N eville... 72
Cod Liver. Vitamin A Potency Estim ated by Spectrographic M ethod. R. L. McFarlan, P. K. Bates, and E. C. M errill 645 Commercial, Analyses Recommended for. A. C. S. Committee, V. C. Mehlenbachcr, Chairman... 379
Cottonseed, Gossypol Determ ination in. H. D. Royce, J. R. Harrison, and P. D. D eans... 741
Fish Liver. Vitamin A Assay with Photoelectric Colorimeter. R. B. French... 351
Fish Liver. Vitamin A Determ ination by Spectrophotometry. D. T. Ewing, J. M . Vandenbelt, A. D. Em m ett, and O. D. Bird... 639
Linseed, Phosphorus Determination in, by Oxygen Bomb. G. T. Piercy, E. K. Plant, and M . C. R ogers... 165
Oiticica, Bodying by Continuous Laboratory M ethod. Vincent Marchese, Joseph M attiello, and L. T. W ork... 77
Oxidation. Apparatus for Continual Observation of Changes in Weight at Oven Temperatures. A. C. Beckel and A. G. Sharp. . 45
Vegetable and Animal, Molecular or Short-Path Still for. S. B. Detwiler, Jr., and K. S. M arkley... 348
(See also Insulation, Lubricants, and Petroleum.) Oiticica Oil Bodying by Continuous Laboratory M ethod. Vincent Marchese, Joseph M attiello, and L. T. W ork... 77
Optical Instruments. A Review. R. H. M iiller... 591
Ores. Platinum -M etal Assay in Concentrates. John Seath and F. E. Beam ish... 169
Or g a n ic Co m p o u n d s Acids, Salts of. M icrodetermination of Equivalent W eights by Electrodialysis. K. H. Dittiner and R. G. G ustavson... 297
Ash Microdetermination in, by Technique with Automatic Com bustion. A. R. Norton, G. L. Royer, and R. K oegel... 121
Carbon and Hydrogen Semimicrodeterminations in, Apparatus for. Carl Niemann and Vance Danford... 563
Carbon Microdetermination in. B. E. Christensen, Robert Wong, and J. F. Facer... 364
790 INDUSTRIAL AND ENGINEERING CHEMISTRY VOL. 12, NO. 12
Carbon Microdetermination in, by Wet M ethod. E . F . Degering and T. Z. B all... ... 124 Chlorine Microdetermination in, with Bomb by Lime-Fusion
M ethod. W . M . M acNevin and W. H. B axley... 299 Copper and Manganese Determinations in. G. F. Palfrey, R. H.
Robert, A. F. Benning, and I. W. D obratz... 94 Microanalysis by Qualitative Systematic Scheme.
Refractive Index of Liquids Determined. H. K. Alber and J. T. B ryant... 305 Specific Gravity Determined. H. K. Alber... 7G4 Micro-Carius Determinations, Furnace for. J. A. Kuck and
Maurice Griffel... 125 Microtechnique of Qualitative Analysis. Group Tests for Com
pounds of Carbon, Hydrogen, and Oxygen. D. G. Foulke and Frank Schneider... 554 Nitrogen Determination in Difficult Compounds by Semimicro-
Dumas M ethod. A. R. R on zio... 303 Oxygen Determined in, by Qualitative Test. David Davidson. . . 40 as Reagents, and Methods Involving Their Use. J. F. Flagg and
N. H. Furman
Indirect Volumetric Determination of M etals Precipitated by Reagents of Oxime T yp e... 738 Precipitation of Bismuth, *Zinc, and Vanadium with Salicyl-
aldoxim e... 663 Qualitative Reactions of Salicylaldoxime and Its 5-Chloro,
3,5-Dibromo, and 5-Nitro Derivatives with Inorganic Ions. . . 529 Sublimation, Accelerated, as M eans for Purification of. A. J.
B ailey... 194 Sulfate Microdetermination from Combustion of. Tetrahydroxy-
quinone as Indicator in Volumetric M ethod. L. T. H allett and J. W. K uipers. ... 360 Sulfur Microdetermination in. E . W. D. Huffman... 53 Sulfur Microdetermination in. Absorption Apparatus for Use
with Combustion M ethod. L. T. H allett and J. W. K uipers... 357 (See also Hydrocarbons.)
Organoinetallic Problems, Research in. W. L. G illiland... 474 Oscillator, Supersonic. B. H. Porter... 748 Oxalic Acid for Identification of Primary Aliphatic Amides. C. A.
M acKenzie and W. T. Raw les... 737 Oxidation-Reduction Titrations, Patent Blue V as Indicator in
(Correction). J. H. Yoe and G. R. Boyd, Jr... 399 Oximes, M etals Determ ined by, in Indirect Volumetric M ethod. N.
H. Furman and J. F. F lagg... 738
Ox y g e n
Bomb. See Bomb.
Determination
of Biochemical Oxygen Demand and Dissolved Oxygen of River Mud Suspensions. C. C. Ruchhoft and W. A. M oore. . 711 in Organic Compounds by Q ualitative M ethod. David D avid
son ... 40 in Steel. Louis Singer... 127 Ozone Analysis by Starch-Iodide M ethod. C. E. Thorp... 209
P Pa i n t
Gloss Measurement. L. A. Wetlaufer and W. E. Scott... 647 Glossmeter for Measuring Distinctness of Image. R. J. M yers.. 678 Lead and Zinc Determination in, by Polarographic M ethod. B.
M . Abraham and R. S. Huffman... 656 M old-Resistant Properties of Oil Paints Tested. A. M . Partan-
sky and R. R. M cPherson... 443 Titanium Pigm ent Analysis by Reduction M ethod. Herman
Skolnik ana W. M . M cN abb... 672 Urea Coating Resins Examined Chemically. J. J. Levenson, J r... 332 (See also Enamel and Oils.)
Paper as Cable Insulation, Microgravimetric Determination of Ac
tive Hydrogen in Oil Deterioration Products from. R. N. Evans, J. E. Davenport, and A. J. R evukas... 301 Paper, Photographic Silver-Gelatin, as R eagent in Spot Analysis.
G. Schwarz... 369
Paraffins, Analysis of M ixtures of, by Raman Spectra. A. V. Grosse, E. J. Rosenbaum, and H. F. Jacobson... 191 Paraffins, Primary Mononitro-, Determined Coloriinetrically. E. W.
Scott and J. F. Treon... 189 Particle Diameter of Powders, Average Measure of. Air-Permeation
Apparatus. E. L. Gooden and C. M . Sm ith... 479 Patent Blue V as pH and Redox Indicator (Correction). J. H. Yoe
and G. R. Boyd, Jr... 399 Pentoses Microdetermined by Quantitative M ethod. It. E. Reeves
and Jackson M unro... 551 Perchlorato Cerate. See Cerate.
Pe r o x id e
in Gravimetric Determ inations. Possible Source of Error in Use of Hydrogen Peroxide Followed by Nitron. R. C. Young and P. M . Bernays... 90 Phosphate Rem oval from Solutions of. S. R. Dickman and R. H.
Bray... 279 in Titanium Determinations. Stability of Peroxidized Titanium
Solutions. G. H. Ayres and E. M. Vienneau... 96
Pe t r o l e u m
Acids, from Texas. Separation and Characterization. H. G.
Schutze, B illie Shive, and H. L. L ochte... 262 Oils, Copper Microdetermination in. Titriinetric Extraction,
Using Dithizone. A. G. Assaf and W. C. H ollibaugh... 695 (See also Hydrocarbons and Lubricants.)
Petroleum Ether-Acetone for Continuous Extraction of Aqueous Solutions. M . Wayman and G. F. W right... 91 Pharmaceuticals, Lead and Thallium Traces Estimated in, by Di
thizone Lim it Test. Karl Bam bach... 63 Phenylurethans, Alcohol Identification by Optical Properties of. B.
T. Dewey and N . F. W itt... 459
Ph o s p h a t e
Detection and Elim ination in Qualitative Analysis by Zirconium Salts. F. K. Pittm an... 514 Determination by Colorimetric M ethod. S. R. Dickman and R.
H. B ray... 665 Rem oval from Hydrogen Peroxide Solutions. S. R. Dickman
and R. H. Bray... 279 Phosphorus Determination in Linseed Oil by Oxygen Bomb. G. T.
Piercy, E. K. Plant, and M . C. Rogers... 165 Phosphorus, Organic, Determined in Soils. R. W. Pearson... 198 Photoelectric Spectrophotometer. See Spectrophotometer.
Photographic Paper. See Paper.
Pigm ents, Carotenoid, M elting Point Determination of, by Micro
scope H ot Stage. F . P. Zscheile and J. W. W hite, Jr... 436 Pigm ents. Titanium Dioxide Evaluation by Reduction M ethod.
Herman Skolnik and W . M . M cN abb... 672
Pl a n t Ma t e r ia l
Boron Determination in. Ignition-Electrom etric Titration M ethod. L. V. W ilcox ... 341 Carotene Determination in. Dicalcium Phosphate as Adsorbent.
L. A. M oore... 726 Chlorophyll and Carotene Determined in. H. G. Petering, W.
Wolman, and R. P. Hibbard... 148 Glutamine Determination in. G. W . Puclier and H. B. V ickery... 27 Starch Determination in. W. Z . Hassid, R. M . McCready, and
R. S. Rosenfels... 142 Tissues, Chemical Constituents Localized in, by Microelectro
graphic M ethod. Herman Y agoda... 698 Zinc Microdetermination in, Using Dropping Mercury Electrode.
J. F. Reed and R. W. Cum mings... 489 Plating Solutions for Brass, Analysis of Free Sodium Cyanide in.
W. M . M cNabb and Samuel H eim an... 161 Platinum M etals, Assay for, in Ore Concentrates. John Seath and
F. E. Beam ish... 169 Polarimeter, Polarizing Microscope Adapted for Use as. Alexander
M arion... 777 Polarograph with Dropping Mercury Electrode. E. F. M ueller.. .. 171 Polarographic Measurements, Condenser for Reducing Galvanometer
Oscillations in. J. J. Lingane and Herbert Kerlinger... 750 Polyalcohols. See Alcohols.
Po t a s s iu m
Determination with Dipicrylamine by Photometric M ethod.
Elias A m dur. ... 731 Determ ination in Water as Potassium-Sodium Cobaltinitrite
Precipitate. R. J. Robinson and J. D. H auschildt... 676 Microdetermination. Cobaltinitrite Precipitate Evaluated by
Iodometric M ethod, Using Ceric Sulfate. I. A. K aye... 310 Microdetermination with Cobaltinitrite, Using Ceric Sulfate.
Bernard Klein'and Mendel Jacobi... 687 Potassium Sulfate as Filtration Aid in Crude Fiber Determination.
A. M. Neubert, Fred VanAmburgh, and J. L. St. John... 451 Powders, Particle Diameter Measurement of. Air-Permeation
Apparatus. E. L. Gooden and C. M . Sm ith... 479 Pressure Regulator for Vacuum Distillation. M . S. N ew m an 274 Propane, Liquid, as Solvent for Pentanc-Soluble Fraction of High-
Tcmperature Bituminous Coal Tar. C. S. Kuhn, Jr... 86 Purdue U niversity’s New Chemical and M etallurgical Engineering
Building. J. L. Bray... 375 Pyrethrin I, Determination of
Investigation of Seil Color R eaction in Mercury Reduction M ethod.
C. S. Sherman and Robert H erzog... 136 Linearity of Results by Mercury Reduotion M ethod. D. A.
Holaday and J. J. T. Graham... 80 Pyrex. See Glass.
Pyridine, Sulfur Microdetermination in, as Elem ent. Color Test.
Hermann Som m er. ... 368
Pyrogallic A cid-Tannic Acid Method for Carbon Monoxide Deter
mination. Adaptation to Standard Gas Analysis Equipment.
Fred Cook... 661
Q
Qualitative Semimicroanalysis, Apparatus for. H. H. Barber 58 Quartz Determ ination in Feldspar. G. H . M cIntyre and M . Bozsin 326
R
Radio Tube Circuits, New Developm ent in Thermionic Relays for.
H. M. Waddle and Walter Saeman. (Correspondence; Lee Nutting, Walter Saeman, 714)... 225 Raman Spectra. See Spectra.
Rauscher s M ethod. See Mercury.
Reagent Analytical Chemicals, Recommended Specifications for.
A. C. S. Committee, W. D . Collins, Chairman... 631 (See also kind of reagent.)
Recorders, Automatic. A Review. R. H. MCiller... 604 Redox. See Oxidation-Reduction.
Reductor, Jones, Modified Form of. J. E. Edwards... 673 Refractive Index of Organic Compounds, M icrodetermination of.
H. K. Alber and J. T. B ryant... 305 Relay, Electronic. C. E. Rudy, Jr., and Paul F ugassi... 757 Relays, Thermionic, New Developm ent in. H. M. Waddle and
Walter Saeman. (Correspondence; Lee Nutting, W alter Saeman, 714)... 225 Resins, Urea, for Coating Compositions. Chemical Examination.
J. J. Levenson, Jr... 332 Rhenium Determined Gravimetrically. Possible Source of Error
in Use of Hydrogen Peroxide Followed by Nitron. R. C. Young and P. M . Bernays. . ... 90 Rhenium Determined in M olybdenite Minerals. C. F. H iskey and
V. W. M eloche. v • • • ; ... 503 Riboflavin. See Vitamins.
Rocks, Alkalies Extracted from. M odification of J. Lawrence Smith Extraction, Using Barium Chloride as Flux. R. E. Stevens 413 Rohrig Tube. See Extraction Apparatus.
Rotenone Determ ination in Derris R oot. T. M . Meijer and D . R.
K oolhaas... 205 Rotenone, Dihydrorotenone Detected and Estim ated in Hydrogena
tion Products of. L. D . Goodhue and H. L. H aller... 652
Ru b b e r
Carbon Blacks Evaluated by X-R ay Diffraction. G. L. Clark and H. D . R hodes... 66 Diarylamine and K etone-Diarylamine Antioxidants Determined
in. L. H. Howland and E. J. H art... 81 Dynamic Fatigue Life of. S. M . Cad well, R. A. Merrill, C. M.
Sloman, and F. L. Y ost... 19 Latex, Examination of, and of Compounds of. I. Physical Testing . M ethods (Correction). H. F. Jordan, P. D . Brass, and C. P.
R oe... 644 Permeability to Gases Measured. A. S. Carpenter and D. F. T w iss.. 99 Stoppers, Adhered, Rem oval of. A. J. Bailey. (Correspondence,
224)... 52
