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Journal of the Association of Official Agricultural Chemists 1945 Vol.28

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Journal of the Association of Official Agricultural Chemists 1945 Vol.28 JOURNAL OF THE ASSOCIATION OF OFFICIAL AGRIClJLTURAL CHEMISTS EDITORIAL BOARD HENRY A. LEPPER, General Chairman EDITORIAL COMMITTEE OF THE JOURNAL W. B. WHITE, Chairman and Editor L. E. WARREN R. B. DEEMER J. B. SMITH L. E. BOPST KATHARINE RONSAVILLE, Assistant Editor VOLUME 28 1945 1945 ASSOCIATION OF OFFICIAL AGRICULTURAL CHEMISTS BOX 540, BENJAMIN FRANKLIN STATION WASHINGTON 4, D.C. COPYRIGHT,1945 BY ASSOCIATION OF OFFICIAL AGRICULTRAL CHEMISTS CONTENTS OF VOLUME 28 PROCEEDINGS OF THE FIFTY-NINTH ANNUAL CONVENTION, OCTOBER 25 AND 26, 1944, AND CONTRIBUTED PAPERS PAGE Obituary-Charles Danforth Howard. By G. K. Crowell No. 1, vii Officers, Committees, Referees, and Associate Referees of the Association of Official Agricultural Chemists for the Year Ending November, 1945.... 1 Members and Visitors Present, 1944 Meeting... .. .... .... ... ... .. 17 President's Address. Contribution of Chemistry to an Industry. By Guy G. Frary. ... 26 Fifty-Ninth Annual Meeting of Association of Official Agricultural Chemists, 1944. Notes by H. A. Huston.. ................................................. 29 TaURsDAy-AFTERNOON SESSION Report of the Editorial Board. By Henry A. Lepper. ............................. 33 Report of Editorial Committee of The Journal. By W. B. White. .................. 34 Report of Committee on Revision of Methods. By H. J. Fisher. ................... 36 Report of Committee on Definitions of Terms and Interpretations of Results on Fertil- . izers..... ............................................................... 37 Report of Committee on Recommendations of Referees. By William F. Reindollar... 38 Report of Subcommittee A on Recommendations of Referees. By E. L. Griffin, L. S. Walker and H. A. Halvorson. ............................................. 40 Report of Subcommittee B on Recommendations of Referees. By F. H. Wiley, H. J. Fisher, and Dan Dahle.. ................................................. 46 Report of Subcommittee C on Recommendations of Referees. By J. O. Clarke, C. S. Ladd, and Kenneth L. Milstead. .......................................... 56 Report of Subcommittee D on Recommendations of Referees. By Joseph Callaway, J. Walter Sale, and L. B. Rhodes.. ........................................ 63 Changes in Official and Tentative Methods of Analysis Made at the Fifty-Ninth Annual Meeting, October 25,26, 1944.............. .. .. .. 71 Report of C. A. Browne as Representative of the National Agricultural Jefferson Bi- centenary Committee. .................................................... 87 Report of Committee on Alcohol Tables. ....................................... 88 Report of Secretary-Treasurer. By Henry A. Lepper..... .. .... .. ... .. .. .. .. .. .. 90 Report of Auditing Committee. By M. S. Anderson and Sumner C. Rowe. .......... 93 Report of Committee on Necrology. By Hermann C. Lythgoe, Charles A. Browne, and J. O. Clarke........ .. .. .. .. .. .. .. .. .. .. 93 Report of Committee on Nominations. By W. H. MacIntire, A. H. Robertson, and R. A. Osborn.. .......................................................... 94 Report of Committee on Resolutions. By John B. Smith, W. C. Geagley, and H. J. Wichmann. ............................................................. 95 CONTRIBUTED PAPERS Determination of Gelatin in Ice Cream. By Donald Mitchell, Edwin H. Shaw, Jr. and Guy G. Frary. .......................................................... 97 Nutritive Evaluation of Defluorinated Phosphates and Other Phosphorus Supplements I. Preparation and Properties of the Samples. By W. L. Hill, D. S. Reynolds, S. B. Hendricks, and K. D. Jacob. .................................. .. 105 II. Defluorinated Phosphates as Phosphorus Supplements for Chicks. By H. R. Bird, J. P. Mattingly, H. W. Titus, J. C. Hammond, W. L. Kellogg,.T. B. Clark, C. E. Weakley, Jr., and A. H. Van Landingham. ................ .. 118 III. Utilization Experiments with Rats. By N. R. Ellis, C. A. Cabell, W. P. Elmslie, G. S. Fraps, P. H. Phillips and Dorothy E. Williams. .......... .. 129 Effect of Silica on the Quantitative Reduction of Nitrates with Devarda Alloy. By J. A. Brabson and J. H. Karchmer...... .. .. .. .. .. .. .. .. .. 142 Rapid Method for Determining "Crude Fiber" in Distillers' Dried Grain. By K. White­ house, A. Zarow and H. Shay. .......................................... .. 147 Estimation of Undecomposed DDT Spray Deposits on Apples From Total Organic Chlorine Content. By Jack E. Fahey '. 152 Adaptation of the Wagner Procedure to the Chemical Evaluation of Fused Tricalcium Phosphate. By W. H. MacIntire and George Palmer. ...................... .. 158 Munson-Walker Reducing Values of Some of Less Common Sugars and of Sodium Glucuronate. By Louis E. Wise and Dorothy Cartier McCammon..... ......... 167 iii iv CONTENTS PAGI: Spectrophotometric Procedure for the Estimation of Vitamin A in Oleomargarine. By J. B. Wilkie and J. B. DeWitt............................................ 174 Vapor Pressure Measurements as an Index to Moillture in Dehydrated Vegetables. By Henry Fischbach. ....................................................... 186 BOOK REVIEWS Food Regulation and Compliance. By Arthur D. Herrick. ...................... .. 192 Obituary-William ap Catesby Jones. By Rodney C. Berry No.2, vii Announcement. ............................................................. viii WEDNESDAy-MORNING SESSION Report on Canned Vegetables and Vegetable Products. By V. B. Bonney. .......... 193 Report on Moisture in Dried Vegetables. By Henry Fischbach..... .............. .. 194 Report on Coloring Matters in Foods. By C. F. Jablonski.... .. ................. .. 197 Report on Dairy Products. By G. G. Frary. .................................. .. 200 Report on Neutralizers in Dairy Products. By Fred Hillig , .. 205 Report on Fat in Milk. By Edward F. Steagall. 207 Report on Solids and Ash in Milk and Evaporated Milk. By Guy G. Frary. ...... .. 2H Report on Lactic Acid in Dried Skim Milk. By Fred Hillig " 213 Report on Chlorine in Milk. By W. H. King. ................................. .. 215 Report on Eggs and Egg Products. By Henry A. Lepper..... 215 Report on Acid in Eggs. By Fred Hillig................... 217 Report on Microanalytical Methods for Extraneous Materials in Foods and Drugs. By Henry Welch.. ........................................................ .. 222 Report on Microanalytical Methods for Extraneous Materials in Drugs, Beverages, and Beverage Materials. By George L. Keenan. ............................... .. 224 Report on Microanalytical Methods for Extraneous Materials in Dairy Products. By J. D. Wildman. ....................................................... .. 225 Report on Microanalytical Methods for Extraneous Materials in Nuts and Nut Prod- ucts. By F. A. Hodges.. ................................................ .. 227 Report on Microanalytical Methods for Extraneous Materials in Baked Products, Ce­ reals, and Eggs. By Kenton L. Harris... ................................. .. 228 Report on Microar:.alytical Methods for Extraneous Materials in Fruits and Fruit Prod- ucts; and Confectionery, Sugars, Sirups, Molasses, and Honey. By W. G. Helsel.. 230 Report on Microanalytical Methods for Extraneous Materials in Vegetable Products. By F. R. Smith............................. 231 Report on Microanalytical Methods for Extraneous Materials in Spices, Condiments, and Miscellaneous Products. By Wm. V. Eisenberg. ....................... .. 232 Report on Decomposition in Foods. By W. 1. Patterson... ..................... .. 233 Report on Volatile Acids in Fish Products. By Fred Hillig. ....................... 239 Report on Gelatin, Dessert Preparations, and Mixes. By S. C. Rowe and E. F. Steagall 242 Report on Gums in Foods. By F. Leslie Hart.................................... 243 Report on Gums in Soft'Curd Cheese. By M. J. Gnagy........................... 245 Report on Gums in Mayonnaise and French Dressing. By Sam D. Fine.... .. ... .. .. 249 Report on Gums in Starchy Foods. By Sutton Redfern. .......................... 252 Report on Meat and Meat Products. By C. H. Swanger. ....................... .. 252 Report on Metals in Foods. By H. J. Wichmann................................ 253 Report on Cadmium. By A. K. Klein and H. J. Wichmann. .................... .. 257 Report on Copper. By C. A. Greenleaf ".... .. ................. .. 269 Report on Zinc. By L. V. Taylor and O. R. Alexander............................ 271 Report on Fluorine. By Paul A. Clifford. ..................................... .. 277 Report on Microbiological Methods in Ef1;gs and Egg Products. By M. T. Bartram... 280 Report on Oils, Fats, and Waxes. By J. Fitelson. ............. .. ............... .. 282 Report on Unsaponifiable Matter. By Gardner Kirsten. ....... .... ... ... .. ..... .. 289 Report on Peanut Oil. By T. H. Riggs and Gardner Kirsten... .................. .. 293 Report on Preservatives and Artificial Sweeteners. By Margarethe Oakley. ....... .. 296 Report on Saccharin. By Margarethe Oakley. ................................. .. 298 Report on Benzoa,:;e of Soda and Esters of Benzoic Acid. By E. B. Boyce. ........ .. 301 Report on Monochloracetic Acid. By John B. Wilson... ....... .. ........ .. ..... .. 302 Report on Spices and Other Condiments. By Samuel Alfend. .................... .. 304 Report on Vinegar. By A. M. Henry. ........................................ .. 307 Report on Starch in Mustard. By Frederick M. Garfield. ....................... .. 308 Appointments. .. .. ......................................... .. .........
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