SUBJECT INDEX
INDUSTRIAL AN D ENGINEERING CHEMISTRY AN ALYTICAL EDITION
VOLUM E 3— 1931
A B R A S IO N Resistance, Measurement of. I— Paints, Varnishes, and Lacquers. A. E. Schuh and E. W . K ern ... 72 Absorption, M icro-, T ube with M ercury Seals. R . T . K . C ornw ell. . . . 4 A bsorption T ube, Im proved, for Com bustion Analysis. W . D. Turner. 63 A cetone-W ater Mixtures, Comparison o f Solubilities o f Calcium and
Strontium p-Brom obenzoates in. J. C. Bailar, J r ... 362
Ac i d s:
Acetic, Benzidine M ethod for Determ ination o f— in Lead Acetate.
J. E. S. Han and T. L, C h u ... ...: ... 379 Organic, Determination^©!. _ V — Application o f Partition M ethod to
Quantitative Determination of Acetic, Propionic, and Butyric—
in M ixture. O. L. Osbum and C. H. W erkm an... 264 Potentiom etric Determ ination o f A cidity in Insulating Oils. R . N.
Evans and J. E. D avenport... 82 Relation of pH o f Butter to Titratable A cidity. B. H . N issen... 374 Value o f Cellulose F atty Acid Esters. T . F. M urray, Jr., C. J.
Staud, and H. LeB. G ra y... .•••.■... 269 Actinometer, Oxalic A rid-U ran yl Acetate, Application of— to Measure
ment o f Sunlight Intensity in C onnection with Photochemical Changes in Gasoline. L. C. Beard, Jr., and O. M . R e iff... 280 Air, Practical M ethods o f Detecting and Estimating M ethyl Chloride
in Foods and. W ith Description o f ModiGed C om bustion M ethod.
M . J. M a rtinet and W . C. M a rti... 408 A lcohol Replacing Gasoline in Brazil... 76 Alcohol. See kind o f alcohol.
Aldehydes, T est for— Using Dim ethylcyclohexauedione. W oltor W einberger... . ... 365 Alkalinity o f Reclaim ed R ubber, Determ ination of. H. F. Palmer and
G. W . M iller... 45 Alkaloids, Opium, as Reagents for Form aldehyde. C. C. F u lton 200 A lloys, C hrom e-N ickel, ModiGed Ford-W illiam s M ethod for M anga
nese in. L . H. Jam es... 31 Alloy Steels. See Steels.
Aluminum, Determ ination of— in Ferrochrom ium and Chrom ium M etal. T , R . C unningham . . ... 103 Aluminum, Spectrographic Determ ination o f— in B iological Ashes.
Dee T ourtellottc and O. S. R a sk ... 97 Amaranth, Quantitative Estimation o f— and Tartrazine in F ood C olor
M ixture. O. L. E venson and R . H. N agel. . ... 260 American Oil Chem ists’ Society, S tudy o f Official M ethod o f Bleaching
Test of. M . T . Sanders. (C orrespondence)... 226 Am ino A cids, E ffect o f— upon R otation o f Glucose and Fructose and
SigniGcance to Determination o f Sucrose b y D ouble Polarization M ethods. D. T . Englis and F . A. D y k in s ... 17
Am m o n i a:
Amm oniacal Fluoride Solutions. E lectroanalytical Separations in.
I— Separation o f C opper from Arsenic and A ntim ony. N . H.
Furm an... 217 A m m onium A cetate Separation o f Sulfates of Lead, Barium, and
Calcium, Investigation of. W . W . S cott and S. M . Alldredge 32 Liquid— Sodium Process, Determ ination o f Organic Halogen by.
T . H. Vaughn and J. A. N ieuw land... 274 See Latex.
Anemia, Pernicious, Copper Iron C om pound Developed fo r ... 313
AsiI: . . . . .
B iological, Spectrographic D eterm ination o f Aluminum in. Dee T ourtellotte and O. S. R ask... ; ... 97 Carbonate, Use o f— Determ ination in Stu dy o f Possible Theoretical
Brix C orrection Factor for Approxim ation o f Solids b y Drying.
Degree B rix-T ota l Solid Relationship. R . H. K in g ... 230 C onductom etric Form ula for Determining— in B oth R aw and R e
finery Sirups and Molasses. Louis Sattler and F. W . Z erba n 38 Electrical C onductivity and— o f Refined Cane Sugars. F. W . Zer-
ban and Louis Sattler... 41 Asphalt, Potentiom etric Determ ination o f Saponification N um ber of
Mixtures o f— and D rying Oils. J. V. Demarest and W m . R iem an, 3 rd ... 15 A utoclave, Simple Laboratory. H. A. Cassar ... 197
B A L A N C E , M odified, for Approxim ate and Quick W eighing. E.
K arrer... 112 Barium Chrom ate M ethod, Volum etric, for Sulfates. J. R . Andrews. . 361 Barium, C onductom etric Titration o f Sulfate and. I. M . K olthoff and
T . K a m ed a ... 129 Barium Fluosilicate Spray Residue, Determination of. R . H. Carter. . 146 Barium H ydroxide, Direct and Reverse Titration o f Sulfuric A cid with.
I, M . K olthoff and E. B. Sandell ... 115 Barium Sulfate. Investigation o f A m m onium A cetate Separation of
Sulfates o f L ead, Barium, and Calcium. W . W . S cott and S. M . A lldredge... .... ... 32 Benzidine M ethod for Determ ination o f A cetic A d d in Lead Acetate.
J. E. S. Han and T . L. C hu. . . . ... 379 Biological Materials, Determ ination o f Iron in M ilk and. R alph
S tugart... 390 B iological Products, E xtractor for. C. L. S h rew sbury.. . .^ . . 320 Bleaching T est, Stu dy o f Offidal M ethod o f American Oil Chemists’
S ociety. M . T . Sanders. (Correspondence) • v • •; ... 226 B oric A cid, Use o f— in M icro-K jeldahl Determ ination o f Nitrogen.
N . M . Stover and R . B . Sandin... 240 B ottles, Gas-W ashing, Com parative E ffiden des of. F. H. R hodes and
D . R . R akestraw ... 143
Brom ination with Potassium B rom ide-B rom ate M ixture, Som e Factors in. Problem s in Estimation o f Unsaturated H ydrocarbons in Gases— III. H. S. Davis, G. S. Crandall, and W . E. Higbee, J r . . . 108 Brom ine, Lots of— in O cean... 107 Bromine M ethod, Adaptation of— to Include R ange o f 1 to 75 p. p. m.
in Determ ination o f Phenols in W ater Solution. J. A . Shaw ... 273 Bromine M ethod, Application o f— in Determ ination o f Phenols and
Cresols. R . D. S c o tt ... 67 Buffers, Use o f— in Determination o f C olor b y M eans o f Titanium
Trichloride— II. O. L. E venson and R . H. N a gel... 167 Butter. See Fats.
B utyl Alcohols, Determ ination o f E th yl and— in M ixtures. C. H.
W erkm an and O. L. Osburn... 387 C A D M IU M :
D etection of. J. S. Pierce and W . T . Forsee... 188 Gravim etric and Direct Volum etric Determ ination of. R . C. W iley . 14 Quantitative Separation o f C opper and— b y R eduction o f T heir
Salts with Potassium Form ate. E. I. F ulm er... 257 C aldum ¿»-Bromobenzoates, Comparison o f Solubilities o f Strontium
and— in A cetone-W ater Mixtures^ J. C. Bailar, Jr... 362 C aldum , Quantitative Determination o f Magnesium, Phosphorus,
and— in Feedstuffs and Cattle Excreta. H. P. M orris, J. W . Nelson, and L. S. P alm er... 164 C aldum , Separation of— and Magnesium b y M olybda te M ethod. R .
C. W ile y ... 127
C aldum Sulfate. Investigation o f A m m onium Acetate Separation o f Sulfates o f Lead, Barium, and C aldum . W . W . S cott and S. M . A lldredge... 32 C alorim etry, A diabatic, Studies in. S. W . Parr and W . D . S ta ley 396
Ca r b o n:
Black, Measurement of Effect of— on Fluidity of Printing Ink. E.
P. W . Kearsley and G. L. R ob erts... 310 D eterm ination o f— in Sewage and Industrial Wastes. F. W . M oh l-
man and G. P. E dw ards... 119 Elim ination o f Sulfur in— Determ inations b y Direct Com bustion.
W . II. B latchley... 13 M ethod for Analysis o f Volatile C om pounds Containing Hydrogen,
Nitrogen, and. W . Scholl and R . O. E. D a v is... 276 See also Steels.
C arbon Dioxide o f High Purity, Generator for Production of. E. J.
P o th ... 202 C arbon Dioxide, Solid, in L aboratory Technic. D . H. K illeffer 386 Cell, Im proved H ydrogen-E lectrode, for Determ ination o f pH . W . B.
B ollen... 203 Cellulose Acetates, Certain, R apid Analysis of. T . F. M urray, Jr.,
C. J. Staud, and H. LeB. G r a y ... 269 Cellulose Covers, Transparent, for Nessler Com parison Tubes. E.
Z im b on ... 356 Cellulose F atty A cid Esters. A cid Value of. T. F. M urray, Jr., C. J.
Staud, and H. LeB. G ray v ... 269 Chart, Alignm ent, for Estimating V iscosity-G ravity C onstant of
Petroleum Lubricating Oils. W . F. H oughton and J. A. R o b b 144 Chemicals, Analytical R eagent, Recom m ended Specifications for.
A. C. S. C om m ittee on Analytical Reagents, W . D . Collins, C hair
m an... 2 21 Chemicals, T w o Hundred Reagent— G ood and Bad. Edward W ich-
ers, Aaron Isaacs, and I. C. S ch oon ov er... 227 Chlorine. Determ ination o f Small Quantities o f Sulfur and— W hen
Present in Turpentine. W . C. S m ith ... 354 Chromate. See kind o f chromate.
C hrom ic Acid M ethod, Determ ination o f C arbon in Sewage and Indus
trial W astes b y. F. W . M ohlm an and G. P. E d w a rd s. ... 119
Ch r o m i u m:
A rc Spectrographic Estimation o f— in R u b y. Jacob Papish and W . J ..O ’L ea ry ...* •• • •.•... H D eterm ination o f Aluminum in Ferrochrom ium and— M etal. T . R .
Cunningham... 103 Determ ination of— and Vanadium in Ores and A lloys after Oxidation
with Perchloric A d d . H. II. W illard and R . C. Gibson. (C orrec
tion, 2 2 6 )... %... 88 Volum etric Determ ination o f— and Nickel in Same Solution. L. H.
Jam es... 258
Co a l:
Analysis o f Light Oils from Low - and Interm ediate-Tem perature Carbonization. E. B. Kester and C. R . H olm es... 292 Fusain. S. W . Parr, H . C. Hopkins, and D. R . M itch ell... 64 Plastometer. N ew Instrument for Measuring Plastic Properties of.
J. D . D a v is ... 43 Portable Equipm ent for Crushing and Quartering Samples o f—
Coke, or Other Lum py Materials. E. S. P etty joh n ... 163 Virginia, Unit Studies on. F. H. Fish and J. A . A ddlestone 155 C obalt, E lectrolytic Determ ination of. D oroth y H. B rop h y ... 363 Coke. See Coal.
Co l o r:
Food, Quantitative Estimation of Amaranth and Tartrazine in. O.
L. E venson and R . H. N a gel... 260 H ydrogen-Ion Concentration and— of Lead Chrom ate Pigments.
R . C. Ernst, E. Pragoff, Jr., and E. E. Litkenhous... 174 M easurem ent of— in Solutions o f W hite Sugars. J. A. Am bler and
S. ByaU... 135 Standards, Glass, N otes on Use o f— for Determ ination o f Phosphorus
b y Deniges C olorim etric M ethod. H . D . C hapm an... 282
IN D U S T R IA L A N D EN GIN EERIN G C H E M IST R Y
423
Use of Buffers in Determination of— b y Means of Titanium Tri
chloride— II. 0 . L .E v e n so n and R . H. N a gel... 167
Colorimeter, Photoelectric, Determination of H ydrogen-Ion Concen tration with. R . H. M üller and H. M . Partridge... 169
C olorim etric Determination of Silica. E. J. K ing; L. A. Thayer (C orrespondence)... 1 17 C olorim etric M ethod, R apid, for Determination of M olybdenum in Plain Carbon and A lloy Steels. T . R . Cunningham and H. L. Hamner... 106
Co m b u s t i o n An a l y s i s: < = Elimination of Sulfur in Carbon Determinations by Direct C om bustion. W . II. B latchley... 13
Gas-Pressure Regulator, Simple and Easily Constructed. A. C. R obertson ... 383
H ydrocarbons, Three. K . A. K o b e ... 262
Im proved Absorption T ube for. W . D. Turner... 63
• M odified M ethod, Description of, in Practical M ethods of Detecting and Estimating M ethyl Chloride in Air and Foods. M . J. Mar- tinck and W . C. M a rti... 408
M odified Pipet for Slow. K . A. K o b e ... 159
Co n d u c t o m k t r i c Db t k r m i n a t i o n s: Ash and Electrical C onductivity o f Refined Cane Sugars. F. W. Zerban and Louis Sattler... 41
Estimation o f Solids in Steam b y C onductivity. J. K . R um m el. . . 317
Formula for Determining Ash in B oth R aw and Refinery Sirups and Molasses. Louis Sattler and J. W. Zerba n ... 38
Titration o f Sulfate and Barium. I. M . K olthoff and T . K am eda. . . 129
Co p p e r: Determination of— in Dairy Products. H. T . Gebhardt and H. H. Som m er... 24
Determination of— in Organic M atter. Stefan Ansbacher, R . E. R em ington, and F. B. C ulp... 314
Iodide M ethod for. Bartholow P ark... 77
Iron Com pound Developed for Pernicious A nem ia... 313
Quantitative Separation of— and Cadmium b y R eduction o f Their Salts with Potassium Form ate. E. I. Fulm er... 257
Separation of— from Arsenic and A ntim ony. Electroanalytical Separations in Aramoniacal Fluoride Solutions— I. N . H. Fur m an ... . . ... 217
C opper Fluosilicate. See Fluosilicates. Cresols, Application o f Bromine M ethod in Determination of Phenol and. R . D. S co tt... 67
D A I R Y Products, Determination of Copper in. H . T . Gebhardt and H. H . Som m er... 24
D ensity of Gems and Small Am ounts o f Solids, D evice for Estimation of. E. W . B lank... 9
Dextrose, Determ ination of— and Levulose in Honey b y Use of Iodine- Oxidation M ethod. R . E. Lothrop and R . L. H o lm e s .. ... 334
Diastase, Taka-, M alt, and Pancreatic. Estimation o f Diastatic En zym e Preparations. Taichi H arada... 1
Dim ethylcyclohexanedione, Test for Aldehydes Using. W oltor W ein berger... 365
Diphenyl, Apparatus for Experimental Pyrolytic Production of. A. W . Hixson, L. T . W ork, H. V. Alessandroni, G. E. Clifford, and G. A. W ilkens... 289
Dish for T oxicity Tests. A . S. Daniels... 358
Di s t i l l a t i o n: Analysis, Precise Fractional, Apparatus and M ethods for. N ew M ethod o f Gas Analysis. W. J. Podbielniak... 177
Apparatus, All-Glass Steam, for Analytical Purposes. V. E . W ell m an ... ... ... Flow Divider for Fractionation under Diminished Pressure. A. M . Schwartz and M . T . B ush... 138
Free Amm onia Nitrogen from Buffered Solutions. M . S. Nichols and Marian E. F o o te ... 311
Im proved Gauze-Plate Laboratory R ectifying Column. S. P a lk in .. 377
K jeldahl— of Nitrogen, Use o f Steam for. Jesse G reen 160 M icro-K jeldahl M ethod, Accurate and Adaptable, of Nitrogen Determination. W . F. A llen... . . .^... 239
Perchloric A d d as N ew Standard in A ddim etry. G. F. Smith and W . W . K o c h ... 52
Stiilhead for L aboratory Columns. E. B. Kester and R . A n d rew s.. . 373
Vacuum , D issodation o f Concentrated Perchloric A d d during— at M oderately Low Pressures. New M ethod for Preparation of Anhydrous Perchloric A d d . O. E. Goehler and G. F. Smith. . . . 55
Vacuum , Purification o f Perchloric A d d b y. G. F. Smith and O. E. Goehler... j 48 Drugs, M anufacturers o f— in R u s sia . ... <... 224
Dumas, M icro-, M ethod, Determination o f Nitrogen by. M icro analysis with Ordinary Balance. W . J. Saschek... 198
Dust M a y Replace Oil as Source o f P ow er... 173
D yes and E gg Albumin. N ew Substrates for Use in Detecting Proteo lytic A ctivity. R . L. Jones 149 E G G A lbum in and Dyes. New Substrates for Use in Detecting P roteolytic A ctivity. R . L. Jones... 149
Electrodes, Low-Resistance Glass, H ydrogen-Ion Determinations with. G. R . R obertson ...: ... 5
Electrodes, Quinhydrone, Continuous Measurement o f pH with. C. C. C oon s... 402
El e c t r o l y t i c De t e r m i n a t i o n: _ A nodic Predpitation o f Lead Peroxide. M . L. N ichols... 384
O f Cobalt. D oroth y H. B rop h y ... 363
O f Lead as Lead Dioxide. W . T . Schrenk and P. H. Delano. . . . ; . 27
Residual-Current Measurements in Control o f M etal Solution in M ilk. H . T . Gebhardt and H. H. Som m er... 414
Enzym e Preparations, Diastatic, Estimation of. Taka-Diastase, M alt Diastase, and Pancreatic Diastase. Taichi H arada... 1
E th yl Alcohols, Determination of B utyl and— in M ixtures. C. H. W crkm an and O. L. Osburn... 387
E thylene, Effect o f Light on Determination of. J. L. Oberseider and J. H. B oyd, Jr... 123
E xcreta, Cattle, Quantitative Determination o f Calcium, Magnesium, and Phosphorus in Feedstuffs and. H. P. M orris, J. W . Nelson, and L. S. Palm er... 164
Extractor. See kind o f extractor. F A T S : , Butter, pH of, and Its R elation to Titratable A d d ity . B. H . Nissen. 374 Determ ination o f Smoking Point of. J. M . M c C o y ... 347
See also Oils. Feedstuffs, Quantitative Determination of C aldum , Magnesium, and Phosphorus in Cattle Excreta and. H. P. Morris, J. W . Nelson, and L. S. Palmer... 154
Ferrochromium. See Chromium. Ferrosilicons, 48 to 52 Per Cent, Indirect Estimation o f Silicon in. G. T . D ou gherty... 158
Fertilizer Materials, Should a Change Be Made in Analytical Procedure for Evaluating Available Phosphoric A d d Content of? C. C. Howes and C. B. Jacobs... 70
Fertilizers, Measurement o f Drillability of. A. L. M ehring... 34
Filtration Tube, Centrifugal, Further Applications of. E. L. Skau and L. F. R o w e ... 147
Fisheries, New Research Laboratory at Gloucester, Mass... 343
Float and Temperature Regulators, Glass. D. F. Othraer... 139
Flow Divider for Fractionation under Diminished Pressure. A. M . Schwartz and M . T . B ush... 138
Fluorine, Effect o f Certain Forms o f Silica on Determination of— by Volatilization M ethod. D . S. Reynolds and K. D. J a cob ... 371
Fluorine, M ethod for Determination of— in Phosphate R ock and Phosphatic Slags. D . S. R eynolds and K. D . J a cob ... 366
Fluosilicates, M ethods for Determining Solubilities of. Katherine K. W orthington with M . M . H aring... 7
F ood Colors. ^ See Color. Food Industries W elcome Legal Standards... 344
Foods, Practical M ethods o f Detecting and Estimating M ethyl C hlo ride in Air and. W ith Description of M odified Combustion M ethod. M . J. Martinek and W. C. M a rti... 408
Ford-W illiams M ethod, Modified. L. II. Jam es... 31
Form aldehyde, Hehner Test for. C. C. F u lton... 199
Formaldehyde, Opium Alkaloids as Reagents for. C . C. F ulton 200 Fractionation. See Distillation. Fructose, Determination o f Glucose in Presence o f— and Glycine by Iodom etric M ethod. F. A. Dykins and D. T . Englis... 21
Fructose, Effect o f Am ino Acids upon Rotation o f Glucose and— and Significance to Determination o f Sucrose b y Double Polarization Methods, D. T . Englis and F. A. D y k in s... 17
Fusain. S. W . Parr, H. C. Hopkins, and D. R . M itchell... 64
G A S : Analysis. Apparatus and M ethods for Precise Fractionat-Distilla- tion Analysis. W . J. Podbielniak... 177
D ry M ethod o f Microanalysis of. F. E. Blacet and P. A. Leighton. . 266
H ydrocarbons, Gaseous, Analysis of. R . Rosen and A. E. R obert son ... 284
M ethod for Analysis o f Volatile Com pounds Containing Carbon, Hydrogen, and Nitrogen. W. Scholl and R. O. E. D a v is ... 276
Pressure Regulator, Simple and Easily Constructed. A. C. R obertson ... 383
Problems in Estimation o f Unsaturated H ydrocarbons in. I l l — Some Factors in Bromination with Potassium Brom ide-B rom ate Mixture. H. S. Davis, G. S. Crandall, and W. E. Higbee, j r . .. . 108
Refinery Still, Determination o f Hydrogen Sulfide in. A. R . Schar nagel and A. W . T ru sty... 29
Washing Bottles, Comparative Efficiencies of. F. H. Rhodes and D. R . Rakestraw... 143
Ga s o l i n e: • Alcohol Replacing— in B razil... 76
Aviation, Solubility o f W ater in. Elizabeth W. A ldrich... 348
Photochem ical Changes in, Application of Oxalic A d d-U ra n y l Acetate Actinometer to Measurement o f Sunlight Intensity in Connection with. _ L. C. Beard, Jr., and O. M . R e iff... 280
Gems, Device for Estimation o f Density of— and Small Amounts of Solids. E. W. B lank... 9
Glassware, Chemical, Easy M ethod o f Marking. K . H . M orkert and W . D. H atfield. . . . ... 242
Glucose, Determination of— in Presence o f Fructose and G lycine by Iodom etric M ethod. F. A. Dykins and D. T . Englis.... 21
Glucose, Effect o f Am ino Acids upon R otation of— and Fructose and Significance to Determination of Sucrose b y Double Polarization Methods. D. T . Englis and F. A. D ykins... 17
Glycerol, Determination o f— in Greases. M . H . Pram m e... 232
Glycine, Determination o f Glucose in Presence o f Fructose and— b y Iodom etric M ethod. F. A. Dykins and D. T . E n g lis. ... 21
G ravity-Viscosity Constant o f Petroleum Lubricating Oils, Alignment Chart for Estimating. W . F. Houghton and J. A. R o b b ... 144
Greases, Determination o f G lycerol in. M . H. P ram m e... 232
Gums, Com m on, M ethod for Identification of. M . B. Jacobs and L. Jaffe... 210
H A L O G E N , Organic, Determination of— b y Liquid Amm onia-Sodium Process. T . H. Vaughn and J. A. N ieuwland... 274
Halogens, New Test for. H. E. Trem ain... 225
Hehner Test for Formaldehyde. C. C. F u lton ... 199
Hemicelluloses, N otes on Determination of. R . C. M alhotra... 161
H oney, Determination o f Dextrose and Levulose in— b y Use of Iodine- Oxidation M ethod. R . E. Lothrop and R . L. Holm es... 334
Hy d r o c a r b o n s: Analysis o f Three— b y Combustion. K . A. K o b e ... 262
Effect o f Light on Determination o f Ethylene. J. L. Oberseider and J. H. B oyd, Jr... 123
Gaseous, Analysis of. R . Rosen and A. E. R obertson ... 284
Olefin, A rom atic, and Paraffin, Determination o f— in Neutral Oil from Coal Tar. E. B. Kester and W . D . P oh le... 294
Unsaturated, Problems in Estimation o f— in Gases. I l l — Some Factors in Bromination with Potassium B rom ide-B rom ate M ix ture. H. S Davis, G. S. Crandall, and W . E. Higbee, J r... 108
H ydrogen, M ethod for Analysis o f Volatile Com pounds Containing Carbon, Nitrogen and. W . Scholl and R . O. E. D a v is .. ... 276
Hy d r o g e n- Io n De t e r m i n a t i o n s: Ammonia Latex, J. M cG avack and J. S. R u m b old ... 94
Butter and Its Relation to Titratable A cidity. B. H. N issen 374 C olor o f Lead Chromate Pigments and. R . C. Ernst, E. Pragoff, Jr., and E. E. Litkenhous... <... 174
Continuous Measurement of— with Quinhydrone Electrodes. C. C. C oon s... 402
H ydrogen-Electrode Cell, Im proved, for Determination of. W . B. B ollen... 203
Photoelectric Colorimeter for. R . H. MGller and H. M . Partridge. 169 Use of W ide-Range Indicators for. F. R . M cC ru m b ... 233
W ith Low-Resistance Glass Electrodes. G. R . R obertson ... 5
Hydrogen Sulfide, Determination of— in Refinery Still Gases. A . R . Scharnagel and A. W. T ru sty... 29
424
A N A L Y T IC A L ED ITIO NVol. 3, No. 4
IG N IT IO N Losses in Potash Analyses o f Triple Superphosphate M ixtures, L . B. Lockh art... 407 Indicators, W ide-R ange, Use o f— for p H D eterm ination. F. R . M c-
C rum b... 233 Ink, Printing, Measurem ent o f Effect o f C arbon Black on Fluidity of.
E, P . W . Kearsley and G . L. R o b e r ts... 310 Insecticides. D eterm ination o f Barium Fluosilicate Spray Residue.
R . H . C arter... 146 Iodide M ethod for Copper. B artholow P a rk ... 77 Iodine, Oxidation o f Ferrous Iron b y — in Presence o f Phosphate and
N on-E xistence o f Ferriphosphate C om plex. W . D , Bonner and Hendrick R om eyn, J r... 85 Iodom etric M eth od, Determ ination o f Glucose in Presence o f Fructose
and G ly dn e b y . F. A . Dykins and D. T . E nglis... 21 Ir o n:
C opper C om pound Developed for Pernicious A nem ia... 313 Determ ination of— in M ilk and Other Biological Materials. Ralph
S t u g a r t . . . ... 390 Ferrous, Oxidation o f— b y Iodine in Presence o f Phosphate and N on
Existence o f Ferriphosphate C om plex. W . D . B onner and H endrick R om eyn, J r .,... 85 Tbiosulfate Titrations o f Small A m ounts o f— in Glass Sands. L . B.
Skinner... 411 K J E L D A H L Method:
Distillation of N itrogen, Use o f Steam for. Jesse G reen... 160 M icro-, Accurate and A daptable, for D eterm ination o f Nitrogen.
W . F. A llen... 239 M icrodeterm ination, Use o f B oric A cid in— o f Nitrogen. N . M .
S tover and R . B . Sandin. . . ... 240 Use of Selenium as Catalyst in Determ ination o f Nitrogen b y. M .
F. L a u ro... 401 L a c q u e r s , s e e Paints.
Latex Am m onia, Determ ination o f p H of. J. M cG a va ck and J. S.
R u m b o ld . . . ... 94 Latex, M icroturbidim eter for Determ ination o f R u b ber C ontent of,
S. D , Gehman and J. S. W a rd ... 300 Leaching, C ontinuous, Apparatus for— with Suction. T. F. Fudge. . . . 114 Lead A cetate, Benzidine M ethod fo r Determ ination o f A cetic A d d in.
J, E. S. H an and T . L . C h u ... 379 Lead Chroroate, Determ ination o f Lead as— in Presence o f Perchloric
A d d . D . J. Brown, J. A . M oss, and J. B. W illiam s... 134 Lead Chrom ate Pigm ents, H ydrogen-Ion Concentration and C olor of.
R . C . Ernst, E. Pragoff, Jr., and E . E. L itkenhous... 174 Lead, Determ ination o f— as Chrom ate in Presence o f Perchloric A d d .
D . J. Brown, J, A. M oss, and J. B. W illiam s... ... 134 Lead, E lectrolytic Determ ination of— as . Lead Dioxide. W . T .
Schrcnk and P. H . D ela n o... 27 Lead Fluosilicate. See Fluosilicates,
Lead Peroxide, A nodic Predpitation of. M . L. N ich ols... 384 Lead Sulfate. Investigation o f A m m onium A cetate Separation of
Sulfates o f Lead, Barium, and Calcium. W . W . S cott and S, M . A lldredge... 32 Levulose, Determination o f— and Dextrose in Honey b y Use o f Iodine-
Oxidation M ethod. R . E. L othrop and R . L. H olm es ... 334;
Light, E ffect o f— on Determ ination o f Ethylene. J. L. Oberseider and J. H . B oyd, Jr... 123 Lignin, Comparison o f T w o M ethods for Determ ination of. Chemis
try o f W ood—;III, Part 1. L. E. Wise and A . M . F airbrother... 253 Lignin, Comparison of T w o M ethods for Preparation of— from W ood.
Chem istry o f W ood — III, Part 2. W . M . Harlow and L . E. W ise . . . 254
M A G N E S IU M , Quantitative Determ ination o f C aldu m , Phosphorus, and— in Feedstuffs and C attle Excreta. H. P. M orris, J. W . N elson, and L. S. P a lm e r. ... 164 Magnesium, Separation o f C aldum and— b y M olybda te M ethod.
R . C. W ile y ... 127 Magnesium Fluosilicate. See Fluosilicates.
M alt Diastase. See Diastase.
Manganese, M odified Ford-W illiam s M ethod for. L. H. Jam es 31 Manganese, Volum etric Determ ination o f— after Oxidation b y Perio
date. II. H . W illard and J. J. T h om p son ... 399 M elting Point Apparatus, E lectrically-Heated. C. E. S an do... 65 M ercury, V olum etric and G ravim etric Determ ination o f— as Periodate.
H . H . W illard and J. J. T h om p son ... 398 M etal, Residual-Current Measurements in C ontrol o f— Solution in
M ilk. H. T . Gebhardt and H. H. Som m er... 414 M ethyl Chloride. Practical M ethods o f D etecting and E stim ating— in
A ir and Foods. W ith Description o f M odified C om bustion M ethod.
M . J. M artinek and W . C. M a r t i. ... 408 Micr oa n alysis:
C opper Determ ination in Organic M atter. Stefan Ansbacher, R . E. R em ington, and F. B. C u lp ... 314 D iy M ethod o f— o f Gases. F. E. Blacet and P. A. Leigh ton 266 W ith an Ordinary Balance. I— Determ ination o f Nitrogen b y
Micro^Duinas M ethod. W. J. Saschck. ... 198 M icrogravim etric Analysis, Im proved Tech nic for. P. L . K irk and
R oderick C raig... 345 M icroturbidim eter for Determ ination o f R ubber Content o f Latex.
S. D . Gehman and J. S. W ard ... 300 Mil k:
Determ ination o f Iron in— and Other B iological Materials. R alph S tu gart... 390 Residual-Current Measurements in Control of M etal Solution in.
II. T . Gebhardt and H. H . Som m er ... 414 See also D airy Products.
M ill for Small Samples. W. H . C ook, E. P. Griffing, and C. L. Alsberg 102 Mineral, Production in Alaska in 1 93 0 . ... 40 M oisture C ontent of Liquid Sulfur Dioxide. A . K . S cribner... 255 M oly bda te M ethod, Separation o f Calcium and M agnesium b y. R . C.
W ile y ... 127 M olybdenum , R apid Colorimetric M ethod for Determ ination o f— in
Plain Carbon and A lloy Steels. T . R. Cunningham and H . L. Harn-
n er... 106
N IC K E L , V olum etric Determ ination of Chrom ium and— in Same
Solution. L. H. Jam es... 258 Nitro g en:
A bsolute Determ ination of— in Organic Com pounds. PregPs M icro
M ethod. O. R . Trautz and J. B. N icderl... ... 151
Am m onia, Free, Distillation o f— from Buffered Solutions. M . S.
N ichols and M . E . F o o te ... 311
Determ ination o f— b y M icro-D um as M ethod. M icroanalysis with Ordinary Balance^—I. W . J. Saschek... 198 M eth od for Analysis o f Volatile C om pounds C ontaining C arbon,
H ydrogen, and. W . Scholl and R . O. E. D a v is ... 276 M icro-K jeldahl M eth od, A ccurate and A daptable, for D eterm i
nation o f. W . F . A llen... 239 Oxides (except N itrous Oxide) in L ow Concentrations, D eterm ina
tion of. A. G. Francis and A . T . Parsons; J. Piccard, E . G.
Peterson, and C. D . Bitting. (C orrespondence)... 225 Use o f B oric A d d in M icro-K jeldahl Determ ination of. N . M .
S tover and R . B. San din... 240
Use o f Selenium as Catalyst in Determ ination o f— b y Kjeldahl M ethod. M . F. L a u ro— ... 401 Use o f Steam fo r K jeldahl D istillation. Jesse G reen... 160
O C E A N . See W ater, Sea.
Oi l:
A ridity, Differential M ethod for Determining. Potentiom etrie T itration in N on-A queous Solutions— L B. L . Clarke, L . A . W ooten , and K . G . C om p ton ... 321 Analysis of F a tty M odifications Obtained b y A ction o f Sulfuric
A rid. M elvin D eG roote, Bernhard Keiser, A. F. W irtel, and L.
T . M on son ... 243 D rying, Potentiom etrie Determ ination o f Saponification N um ber of
M ixtures of Asphalt and. J. V . Dem arest and W m . Riem an, 3 rd... 15 Dust M a y Replace— as Source o f P ow er... 173 Insulating, Potentiom etrie Determ ination o f A ridity in. R . N .
Evans and J. E . D a v en p ort... 82 Light, Analysis o f— from L ow - and Interm ediate-Tem perature
Carbonization. E . B . Kester and C. R . H olm es... 292 Measurem ent o f R ate o f Form ation o f Oxidative D ecom position
Products in Fats and. D . P. Grettie and R . C . N e w to n ... 171 See also Petroleum .
Opium Alkaloids. See Alkaloids.
Organic M atter, C opper Determ ination in. Stefan Ansbacher, R . E.
Rem ington, and F. B. C u lp . ... 314 Oxides o f N itrogen (except Nitrous Oxide) in L ow Concentration.
Determ ination o f. A . G. Francis and A. T . Parsons; J. Piccard, E. G . Peterson, and C. D. Bitting. (C orrespondence) ... 225 Oxonium Perchlorate as Reference Standard for Construction of
Specific G ravity-P ercen tage Com position T a b le for Strong Per
chloric A rid Solutions. G. F. Smith and O. E . G oeh ler... 61 Oxonium Structure o f H ydrated Perchloric A rid. G . F. Sm ith and
O. E. G oehler... 58
P A IN T , Expansion o f— Industry in In d ia ... 360 Painting, W ood— Conference, Proceedings o f ... 118 Paints, Varnishes, and Lacquers. Measurement o f Abrasion R e
sistance— I. A. E . Schuh and E. W . K e r n ... 72 Pancreatic Diastase. See Diastase.
Paraform , M ethod for Determ ination o f Small Quantities of— in Various M ixtures. W oltor W einberger... 357 Partition M ethod, A pplication of— t o Quantitative Determ ination of
A cetic, Propionic, and B utyric Acids in M ixture. Determ ination of Organic A cids— V . O. L. Osburn and C . H . W erkm an... 264
Pe r c h l o r i c Ac i d:
A s N ew Standard in Acidim etry. G. F . Sm ith and W . W . K o c h .. . . 52 C oncentrated, Dissociation of— during V acuum Distillation at
M oderately L ow Pressures. N ew M ethod for Preparation. O.
E . Goehler and G. F. S m ith ... 55 D eterm ination o f Chrom ium and Vanadium in Ores and A lloys after
O xidation with. H . H . W illard and R . C. Gibson. (C orrection,
2 2 6 ) 88
Determ ination o f Lead as Chrom ate in Presence of. D. J. Brown, J. A. M oss, and J. B. W illiam s... 134 H ydrated, Oxonium Structure of. ^ G. F. Smith and O. E. G o e h le r .. . 58 Purification o f— b y Vacuum Distillation. G . F. Smith and O. E.
G oehler... 48 Strong Solutions, Oxonium Perchlorate as Reference Standard for
Construction o f Specific G ravity-P ercen tage Com position Table for. G. F. Smith and O. E. G oehler... 61 Periodate. See kind o f periodate.
Petroleum. Determ ination o f Olefin, A rom atic, and Paraffin H ydro
carbons in Neutral Oil from C oal T ar. E. B . Kester and W . D.
P oh le... ... ... ... ... 294 Petroleum Lubricating Oils, Alignm ent Chart for E stim ating Vis-
cosity -G ra v ity Constant of. W . F. H oughton and J. A. R o b b 144 Phenol, Application o f Brom ine M ethod in Determ ination of— and
Cresols. R . D . S c o tt . ... 67 Phenols, Determ ination of— in W ater Solution. A daptation o f B ro
mine M ethod t o Include R ange o f 1 to 75 p. p. m. J. A . Shaw 273 Phosgene, Quantitative Determ ination of. J. C. Olsen, G. E . Fergu
son, V. J. Sabetta, and L eopold S ch efla n .. . 189 Phosphate, Oxidation o f Ferrous Iron b y Iodine in Presence o f— and
Non-E xistence o f Ferriphosphate Complex. W . D . B onner and Hendrick R om eyn, Jr... 85 Phosphate R ock and Slags. M ethod for Determ ination o f Fluorine in.
D . S. R eynolds and K . D . J a cob ... ... 366 Phosphates, Determ ination o f— in Presence o f Silica in B oiler W ater.
E. W . S carritt... 23 Phosphoric Acid, Availability o f— in A m m oniated Superphosphates.
K . Kitsuta and R . M . Salter... 331 Phosphoric A cid, Should a Change Be M ade in A nalytical Procedure
for E valuating Available— Content of Fertilizer Materials? C . C.
Howes and C. B. J acobs... 70
Ph o s p h o r u s:
Determ ination o f. Im purities in W hite Sugars— I. S. B yall and J. A . A m b ler... 136 N otes on Use o f Glass C olor Standards for Determ ination of— b y
Deniges Colorim etric M eth od. H. D . C hapm an... 282 Quantitative Determ ination o f Calcium, Magnesium , and— in F eed
stuffs and C attle Excreta. H. P. M orris, J. W . N elson, and L , S.
Palm er... 164 Photochem istry. Application o f Oxalic A rid-U ran yl A cetate A cti-
nom eter to_ Measurem ent o f Sunlight Intensity in C onnection with Photochem ical Changes in Gasoline. L. C. Beard, Jr., and O. M . R e iff... ... 280
IN D U S T R IA L A N D ENGINEERING C H E M IST R Y
425
Photoelectric Colorimeter. See Colorimeter.
Pigments. See kind o f pigment.
Pipet, M odified Slow-Com bustion. K . A. K o b e ... 159 Plants. Notes on Determination of llemicelluloses. R . C. M alhotra. 101 Plastometer. N ew Instrument for Measuring Plastic Properties of
Coal. J. D . D a vis... 43 Polarization, Double, Effect o f Amino A d d s upon R otat on o f Glucose
and Fructose and Significance to Determination of Sucrose by—
M ethods. _ D. T . EngUs and F. A. D y k in s... 17 Potash, Ignition Losses in— Analyses of Triple Superphosphate M ix
tures. L. B. L ockhart... 407 Potassium B rom idc-B rom ate Mixture, Some Factors in Bromination
with. Problems in Estimation of Unsaturated Hydrocarbons in Gases— III. H. S. Davis, G. S. Crandall, and W . E. Higbee, J r . . . 108 Potassium Ferrocyanide, Stability o f—Solutions. I. M . K olthoff and
E. A. Pearson... 381
Potassium Form ate, Quantitative Separation of Copper and Cadmium b y R eduction o f Their Salts with. E. I. Fulm er... 257 Potassium, Quantitative Determination of— b y Sodium Cobaltinitrite
M ethod. P. J. Van Rysselberge... 3 Potassium, R apid Volum etric M ethod for Determination of. Loyal
Clarke and J. M . D avidson... 324 POTKNTIOMETRIC DETERMINATIONS:
A d d it y in Insulation Oils. R ; N. Evans and J. E. D avenport 82 Saponification Num ber of Mixtures o f Asphalt and Drying Oils.
J. V. Demarest and Wm. Rieman, 3 rd ... 15 Titration in N on-A queous Solutions. I— Differential M ethod for
Determ ining Oil A cidity. B. L. Clarke, L. A. W ooten, and K . G. C om p ton ... 321 Powders, Fine, A ccurate A ir Separator for. P. S. R oller... 212 Power, Dust M a y R eplace Oil as Source o f ... 173 Pregl's M icro-M ethod o f Absolute Determination of Nitrogen in
Organic Com pounds. O. R . Trautz and J. B. N iederl... 151 Protein, N ew Conversion Factors fo r ... 376 Proteolytic A ctivity, N ew Substrates for Use in Detecting. R . L.
Jones... 149 Pyrethrin I, Quantitative Determination of. R. C. V ollm ar _. 110 Pyrolysis. Apparatus for Experimental Pyrolytic Production o f D i
phenyl. A. W. Hixson, L. T . W ork, H. V. Alessandroni, G. E.
C lifford, and G. A. W ilkens... 289
Q U IN H Y D R O N E Electrodes. See Electrodes.
R E A G E N T Chemicals, Analytical, Recom m ended Spedfications for.
A. C. S. C om m ittee on Analytical Reagents, W . D . Collins, Chair
m an ... 22 1 Reagent Chemicals, T w o Hundred— G ood and Bad. Edward Wichers,
Aaron Isaacs, and I. C. S choonover... ... ... .. 227 Reagents. M ethod for Increasing Sensitivity o f Certain Chemical
Test Reactions. Irwin S ton e... 325 R ectifying Column, Im proved Gauze-Plate Laboratory. S. P a lk in ... 377 Regulators. See kind o f regulator.
Resins, Synthetic, M ethods for D etection and Identification of. T . F.
B radley... 304
Ru b b e r:
M icroturbidim eter for Determination of— Content of Latex. S. D.
Gehman and J. S. W ard ... ... 300 N ew A utographic Machine for Testing Tensile Properties of. G. J.
A lbertoni...; ... 236 R eclaim ed, Determination o f Alkalinity of. H. F. Palmer and G. W.
M iller... 45 Scorching, and Other P la stidty Changes in— Compounds on Heat
ing. K. O. Dieterich and J. M . D a v ie s ... 297 Threads, Graphical Tensile-Testing Machine for. S. H. Hahn and
E. O. D ieterich ... ...• 218 R u b y, A rc Spectrograpliic Estimation of Chromium in. Jacob Papish
and W . J. O 'L ea ry... 11
Sa n d s, Glass, Thiosulfate Titrations o f Small Amounts of Iron in.
L. B. S k inner. ... 411 Selenium, Use of— as Catalyst in Determination o f Nitrogen b y K jel-
dahl M ethod. M . F. L a u r o ... 401 Separator, Accurate Air, for Fine Powders. P. S. R oller... 212 Sewage, Determination o f C arbon in— and Industrial Wastes. F. W.
M ohlm an and G. P. Edwards... 119
Sil ic a: _
Colorim etric Determination of. L. A. Thayer; E. J. King. (C or
respondence) . . • ■ 117
Determ ination o f Phosphates in Presence of— in Boiler W ater. E.
W . S carritt Y ' ^
Effect of Certain Form s of— on Determination o f Fluorine by v o la tilization M ethod. D. S. R eynolds and K . D. J a cob ... 371 Silicon, Indirect Estimation of— m 48 to 52 Per Cent Ferrosilicons. _
G. T . D ou gherty... 158 Sludge Ripeness Studies. E. L. Pearson and A. M . Buswell... 3o9 Soap, Some Factors Influencing— Tests for Hardness. R . H. Kean
and H. G ustafson... 355 Sodium:
Determ ination of— in Organic Compounds. Use o f Uranyl Acetate M ethod. D. L. Tabern and E. F. Shelberg... 278 D eterm ination o f Organic Halogen b y Liquid Amm onia— Process.
T . H. Vaughn and J. A. N ieuw land • 2 /4
Irregularities in— Determination b y Sodium Sulfate M ethod. G.
W . C ollins •• 291
Sodium Cobaltinitrite M ethod, Quantitative Determination o f P o
tassium by. P. J. Van Rysselberge... 3 Sodium Fluosilicate. See Fluosilicates.
Solids: .
D evice for Estimation of Density o f Gems and Small Amounts of.
E. W . B lank . -.- ... g
Estimation o f— in Steam b y Conductivity. J. K . R um m el #. ¿17 Study of Possible Theoretical Brix Correction Factor for A pproxi
m ation of— b v Drying Using Carbonate Ash Determination. A Degree B rix-T ota l Solid Relationship. R. H. K in g ... 230 Solubilities o f Calcium and Strontium p-Brom obenzoates in Acetone-
W ater M ixtures, Comparison of. J. C. Bailar, J r ... . . . •••.•• • - - • • • 362 Solutions, Non-Aqueous, Potentiom etric Titration in. I— Differential
M ethod for Determining Oil A cidity. B. L. Clarke, L. A. W ooten, and K . G. C om p ton ... 3-1
Solutions, Potassium Ferrocyanide, Stability of. I. M . Kolthoff and E. A. Pearson... 3 3 1 Soxhlet Extractor, Large-Scale. S. A. L ou g h... 344
Sp e c t r o o r a p h i c An a l y s e s:
Aluminum in Biological Ashes. Dee Tourtellotte and O. S. R ask 97 A rc Spectrographic Estimation of Chromium in R u b y. Jacob
Papish and W. J. O ’ Leary... 1 1 Spectrophotometer, Measurement of T urbidity with. W ith Especial
Reference to Sugarhouse Products. R . T , B alch... 124 Starch Solutions, Measurement of Consistency of. J. C. R ipperton. . . 152
St e a m:
Distillation Apparatus, All-Glass, for Analytical Purposes. V. E.
W ellm an 281
Estimation of Solids in— by Conductivity. J. K. R um m el... 317 Use o f— for Kjeldahl Distillation of Nitrogen. Jesse Green... 160 Steels, A lloy and Plain Carbon, Determination of Zirconium in. T . R.
Cunningham and R . J. P rice... 105
Steels, A lloy and Plain Carbon, R apid Colorimetric M ethod for Determination o f M olybdenum in. T . R . Cunningham and H . L.
H am ner... 106 Stillhcad. See Distillation.
Strontium p-Bromohenzoates, Comparison o f Solubilities o f Calcium and— in Acetone-W ater Mixtures. J. C. Bailar, Jr... ... 362 Substrates, New, for Use in Detecting P roteolytic A ctivity. R . L.
_ Jones... 149 Sucrose, Effect of Amino Acids upon R otation of Glucose and Fructose
and Significance to Determination o f— b y Double Polarization M ethods. D . T . Englis and F. A. D ykins... 17
Su g a r:
Cane, Refined, Ash and Electrical Conductivity of. F. W. Zerban and Louis Sattler... 41 Conductom etric Formula for Determining Ash in Both R aw and
Refinery Sirups and Molasses. Louis Sattler and F. W. Zerban. . . 38 Degree B rix-T otal Solid Relationship. Study of Possible T h eo
retical Brix Correction Factor for Approxim ation of Solids by D rying Using Carbonate Ash Determination. R . H. K in g 230 Measurement of T urbidity with Spectrophotometer. W ith Especial
Reference to Sugarhouse Products. R . T. B a lch ... 124 Studies on Turbidity in— Products. I— Relation between Intensity
of Tyndall Beam and Depth and Concentration of Solution. F.
W . Zerban and Louis Sattler... 326 W hite, Impurities in.
I— Determination of Phosphorus. S. By all and J. A. A m bler 136 II— Determination o f Sulfates, Sulfites, and Aldehyde-Sulfites.
J. A . Ambler, J. B. Snider, and S. B ya ll... 339 II I — Determination o f Labile Organic Sulfur. J. A. A m bler 341 W hite, Measurement of Color in Solutions of. J. A. Ambler and
„ S. B ya ll... 135 See also kind o f sugar.
Su l f a t e s:
Conductom etric Titration o f Barium and. I. M . K olthoff and T . K a m e d a .,... 129 Determination of Sulfites, Aldehyde-Sulfites, and. Impurities in
W hite Sugars— II. J. A. Ambler, J. B. Snider, and S. B ya ll 339 Volum etric Barium Chrom ate M ethod for. J. R. Andrews... 361
Su l f u r:
Determination o f— b y Means o f Turbidim eter. S. W . Parr and W . D. S taley... 66 Determ ination o f Small Quantities of Chlorine and— When Present
in Turpentine. W . C. S m ith ... 354 Elimination of— in C arbon Determinations by Direct Combustion.
W . II. B latchley ... 13 Labile Organic, Determination of. Impurities in W hite Sugars—
I I I « , J- A . A m bler... 341 Sulfur Dioxide, Liquid, Moisture Content of. A. K. Scribner... 255 Sulfuric A cid, Analysis of Fatty M odifications Obtained by A ction of.
M elvin DeG roote, Bernhard Keiser, A. F. Wirtel, and L. T . M onson. 243 Sulfuric A d d , Direct and Reverse Titration of— with Barium H y
droxide. I. M . K olthoff and E. B. Sandell... 115 Sunlight. See Photochemistry.
T A K A -D IA S T A S E . See Diastase.
T ar, Coal, Determination o f Olefin, Arom atic, and Paraffin H ydrocar
bons in Neutral Oil from . E. B. Kester and W . D. Pohle... 294 Tartrazine, Quantitative Estimation o f Amaranth and— in F ood Color
Mixture. O. L. Evenson and R . H. N a gel... 260 Tem perature and Float Regulators, Glass. D. F. Othm er... 139 Tensile-Testing Machine, Graphical, for R ubber Threads. S. II. Hahn
and E. O. Dieterich... 218 Tensile-Testing M achine, New Autographic, for Properties o f Rubber,
G. J. A lbertoni... 236 Thermostat, Low-Tcmperature. H. W. Foote and Gosta A kerlof. , . . 389 Thiosulfate Titrations o f Small Amounts of Iron in Glass Sands. L. B.
Skinner ... 411
Titanium Trichloride, Use of Buffers in Determination of C olor by Means o f— II. O. L. Evenson and R . II. N a gel... 167 T oxicity Tests, Dish for. A. S. Daniels... 358 Turbidim eter, Determination of Sulfur b y Means of. S. W . Parr and
W. D. Staley... 66
T urbidity, Measurement of— with a Spectrophotometer. W ith Es- peda l Reference to Sugarhouse Products. R . T . B alch... 124 Turbidity, Studies on— in Sugar Products. I— R elation between
Intensity of Tyndall Beam and Depth and Concentration o f Solution.
F. W . Zerban and Louis Sattler... 326
Turpentine, Determination of Small Quantities o f Sulfur and Chlorine When Present in. W . C. Sm ith 1... 354
U L T R A -V IO L E T Plant Installation, W orld’s Largest... 133 Uranyl Acetate, Use of— M ethod in Determ ination o f Sodium in Or
ganic Compounds. D. L. Tabern and E. F. Shelberg... 278
V A C U U M Regulator, M odified. A, A . Sunier and C. M . W hite. . . 259 Vanadium, Determination o f Chromium and— in Ores and Alloys
after Oxidation with Perchloric Acid. H . H. Willard and R . C, Gibson. (Correction, 2 26 )... 88 Varnishes. See Paints.
Viscosity-G ravity Constant o f Petroleum Lubricating Oils, Alignment Chart for Estimating. W . F. Houghton and J. A. R o b b ... 144
426
A N A L Y T IC A L EDITIO NVol. 3, No. 4
W A S T E S , Industrial, Determ ination o f C arbon in Sewage and. F.
W . M ohlm an and G. P. E dw ards... 119
Wa t e r: > #
Analysis, Interpretation of. D . S. M cK in n e y \ v • \...
Boiler, Determ ination o f Phosphates in Presence of Silica in. E. W .
Scarritt... 23
Hardness, Some Factors Influencing Soap Tests for. R . H . Kean and H. G ustafson...• • • ; ... : ...\
Phenols in— Solution, Determ ination of. Adaptation o f Bromine M ethod to Include Range o f 1 to 75 p. p. m. J. A. Shaw 273 Sea:
Buffer C apacity of. T . G. Thom pson and R . U. B onnar... 393 Lots of Bromine in ... 107
Proposed M odification of Oxygen Consum ed M eth od for D eter
m ination o f— Pollution. H . K . Benson and J. F. G. Hicks, J r . . 30 Solubility of— in A viation Gasolines. E lizabeth W . A ld rich ... 348 W ood, Chem istry of— III.
Part 1— Comparison o f T w o M ethods for Determ ination o f Lignin.
L. E. W ise and A. M . F airbrother... : ..,4... 253 Part 2— Com parison of T w o M ethods for Preparation o f Lignin from
W ood. W . M . Harlow and L . E. W ise... 254 W ood Painting Conference, Proceedings o f ... 118 Z I N C Fluosilicate. See Fluosilicates.
Zirconium , Determ ination of— in Plain C arbon and A lloy Steels. T.
R . Cunningham and R . J. P r i c e . . . . ... 105
