JOURNAL OF THE ASSOCIATION OF' O~--'FICIAL.I AGRIClJLTURAL CI-IEM ISTS EDITORIAL BOARD \VILLIAM HORWITZ, General Chairman EDITORIAL COMMITTEE OF THE JOURNAL PAUL A. CLIFFORD, Chairman and Editor E. L. GRIFFIN J. B. S:WUTH F. H. \VILEY A. H. ROBERTSON HELEN REYNOLDS, Assistant Editor VOLUME 36 1953 1953 ASSOCIATION OF OFFICIAL AGRICULTURAL CHEMISTS BOX 540, BENJA::\~IN FRANKLIN STATION WASHINGTON 4,_ :D.C. COPYRIGHT, 1953 BY ASSOCIATION OF OFFICIAL AGRICULTURAL CHEMISTS CONTENTS OF VOLUME 36 PROCEEDINGS OF THE SIXTY-SIXTH ANNUAL MEETING, SEPTEMBER 29 TO OCTOBER 1, 1952, AND CONTRIBUTED PAPERS Page Officers, Committees, Referees, and Associate Referees of the Association of Official Agricultural Chemists, for the Year ending October 1953 . 1 Members and Visitors Present, 1952 Meeting . 16 President's Address: "Methodology." By Henry A. Lepper . 30 Address: "Important Applications of Our Growing Knowledge of Nutrition." By L. A. Maynard . 3P WEDNESDAy-MORNING SESSION Report of the Editorial Board. By K. L. Milstead, Chairman . 45 Report of the Editorial Committee of the Journal. By Paul A. Clifford . 45 Report of Committee to Confer with American Public Health Association on Standard Methods for the Examination of Dairy Products. By A. H. Robertson . 46 Report of the Committee on Recommendations of Referees. By Wm. F. Reindollar . 47 Subcommittee A. By K L. Gi·iffin . 48 Subcommittee B. By Frank H. Wiley . 52 Subcommittee C. By A. H. Robertson . 54 Subcommittee D. By J. Walter Sale . 60 Changes in Official Methods of Analysis Made at the Sixty-sixth Annual Meeting, September 29, 30, and October I, 1952 (With an Appendix Showing Errata, Emendations, Etc.) . 65 Report of the Secretary-Treasurer. By K. L. Milstead . 101 Report of the Committee on Necrology. By Jonas Carol. 102 Report of the Committee on Nominations. By W. H. Maclntire . 104 Report of the Committee on Resolutions. By E. W. Constable . 105 CONTRIBUTED PAPERS Serological Methods in the Regulatory Control of Foods. By Elizabeth J. Oswald . 107 Analysis of Lemon Oils. By J. W. Sale, et al . 112 Methods for the Examination of Lemon Oil. By W. O. Winkler . 119 The Content of Uronic Acids in Several Grades of Flue-Cured, Type 12 To- bacco. By Max Phillips and Aubrey M. Bacot . 123 Preparation of Sample of Pressurized Cream. By Catherine G. Cunningham.. 128 The Determination of Moisture in Process American Cheese and Process Cheese Food. By J. H. Cook, H. C. Follstad, and W. W. Fisher . 132 An Evaluation of Five Procedures for the Determination of Internal Insect Infestation of Wheat: Part I. Berberine Sulfate Fluorescent Stain for Weevil Egg Plugs (in Wheat and Corn). By G. C. Reed and Kenton L. Harris . 138 Part II. Gelatinization in Sodium Hydroxide. By George E. Keppel and Kenton L. Harris . 140 Part III. Buhler M;~:;ng of the Wheat. By J. Frank Nicholson, Kenton L. Harris, Frank R. Smith, and Maryvee G. Yakowitz . 144 Part IV. Visual Examination for Insect Exit Holes. By J. Frank Nicholson, John C. Akers, Kenton L. Harris, and O. L. Kurtz . 146 Part V. The Use of X-Rays. By J. Frank Nicholson, Max Milner, W. H. Munday, O. L. Kurtz, and Kenton L. Harris . 150 Part VI. Investigations on the X-Ray Inspection of Wheat. By J. Frank Nicholson, O. L. Kurtz, and Kenton L. Harris . 156 BOOK REVIEW Introductory Mycology. Review by F. Allen Hodges. .................... 160 iii IV CONTENTS MONDAy-MORNING SESSION Page R 'port on Processed Vegetable Products. By L. M. Beacham . 161 Report on Peroxidase in Frozen Vegetables. By M. A. Joslyn . 161 Report on Oils, Fats, and \Vaxes. By G. Kirsten . 178 Report on Dairy Products. By William Horwitz . 179 Report on Foreign Fats in Dairy Products. By J. H. Cannon . 181 Report on Fat in Dairy Products. By E. O. Herreid . 183 Report on Fat in Homogenized Milk by a lVIodified Babcock Method. By C. E. Hynds . 185 Report on Preparation of Sample of Creamed Cottage Cheese with the Waring Blendor. By Sam H. Perlmutter . 187 Report on Frozen Desserts. By Hugh M. Boggs . 190 Report on Eggs and Egg Products. By F. J. McNall .. ' . 194 ';:~.c:lort on Added Glycerol in Egg l\fixtures Containing Sugars. By George E. 'T{eppel . 195 Report on Feeding Stuffs. By M. P. Etheredge . 197 Report on Ash in Feeding Stuffs. By R. L. Willis . 198 Report on Copper Determination in Minerals Feeds. By J. C. Edwards .. , .. 198 Report on Fat in Fish Meal. By M. E. Stansby . 202 Report on Crude Fat in Baked Dog Food. By H. H. Hoffman . 208 Report on M!croscopy of Fee~ing i;3tuffs. By J. A. Shrader . 211 Report on MIlk By-Products III MIxed Feeds. By Ara O. Call . 213 Report on Drugs in Feeds. By Richard T ..Merwin . 219 Report on Soils and Liming Materials. By W. H. MacIntire. " . 226 Report on Potassium Analyses in Soils and Plant Materials by Flame Photom- eter Methods. By A. Mehlich . 227 Report on Exchangeable Hydrogen in Soils. By W. M. Shaw ,. 230 Report on Fluorine in Soils. By L. J. Hardin . 237 Report on Sugars and Sugar Produets. By C. F. Snyder . 211 Report on Micro Methods of Sugar Analysis. By Betty K. Goss . 245 Report on Transmittancy of Sugar Solutions. By F. W. Zerban . 250 Report on Reducing Sugar Methods. By Emma J. MeDonald . 259 Report on Densimetric and Refractometric Methods for Sugar Products. By C. F. Snyder . 260 Report on Cacao Products. By W. O. Winkler . 261 Report on Lecithin in Cacao Products. By J. H. Bornmann . 263 Report on Fruits and Fruit Products. By R. A. Osborn . 264 Report on Fruit (Tartaric and Laevo-Malic Acids). By L. W. Ferris . 266 Report on Frozen Fruits (Fruit, Sugar, and Water Content). By H. O. Fall- scheer and R. A. Osborn . 270 Report on Meat and Meat Products. By R. M. Mehurin . 278 Report on Moisture Determination in Meat Products. By E. S. 'Vindham . 279 Report on Fat in Meat Products. By E. S. Windham . 288 Report on Starch in Meat Products. By F. J. Stevens and R. A. Chapman .. 292 Report on Extraneous Materials in Foods and Drugs. By Kenton L. Harris. 300 Report on Extraneous Materials in Drugs, Spices, and Miscellaneous Prod- ucts. By William V. Eisenberg . 301 Report on Extraneous Materials in Dairy Products. By Dorothy B. Scott . 301 Report on Extraneous .Materials in Nut Products. By Maryvee G. Yakowitz. 307 Report on Extraneous Materials in Cereal Grains, Cereal Products, and Con- fectionery (Internal Infestation of \Vheat). By J. Frank Nicholson .. '" 309 Report on Extraneous Materials in Vegetable Products. By Frank R. Smith. 310 Report on Sediment Tests in Milk and Cream. By Curtis R. Joiner . 310 Report on Microbiological Methods. By Glenn G. Slocum . 315 Report on Microbiological Methods for Eggs and Egg Products. By M. T. Bartram . 316 Report on Nuts and Nut Products. By A. M. Henry . 317 Report on Standardization of Microchemical Methods. By C. O. Willits . 318 Report on Microanalytical Determinations of Bromine and Chlorine. By Al Steyermark and Marie W. Garner . 319 Report on Microanalytical Determination of Sulfur. By C. L. Ogg . 335 Report on Microanalytical Determination of Nitrogen by the Dumas Method. By C. L. Ogg . 344 Report on Standard Solutions. By H. G. Underwood . 354 CONTENTS V Report on Constant Boiling Hydrochloric Acid. By Sidney Williams and William Weiss... .............................................. .. 354 Report on Disinfectants. By L. S. Stuart.. ........................... .. 362 Report on Fungicides and Subculture Media. By L. F. Ortenzio. ........ .. 3'\3 Report on Ingredients for Disinfectant Testing (Bacteriological Culture Media). By Michael J. Pelczar. ................................. .. 364 Report on Economic Poisons. By J. J. T. Graham. .................... .. 365 Report on Benzene Hexachloride. By Irwin Hornstein. ................. .. 367 Report on Pyrethrins. By David Kelsey. ............................. .. 369 Report on Rotenone. By R. Payfer. ................................. .. 371 Report on Rodenticides. By J. B. LaClair. ............................ .. 373 Report on 2,4-D Herbicides. By A. B. Heagy. ......................... .. 378 Report on Isopropyl N-Phenylcarbamate and Helated Compounds. By Roy L. Shaw.................... 381 Report on Parathion. By Paul A. Giang. ............................. .. 384 Report on Organic Thiocyanates. By Herbert A. Rooney .. _............ .. 38':' Report on Allethrin. By Milton S. Konecky " 388 Report on Piperonyl Butoxide. By Boyd L. Samuel. ................... .. 390 Report on Plants. By E. J. :Miller.... ................................ .. 391 Report on Sodium in Plants. By Eunice J. Heinen. .................... .. 392 Report on Zinc in Plants. By Eunice J. Heinen and Erwin J. Benne.... .... 397 Report on Starch in Plants. By Carroll L. Hoffpauir.. ................. .. 400 Report on Sugars in Plants. By Kenneth T. Williams and Earl F. Potter. .. 401 Report on Copper and Cobalt in Plants. By Kenneth C. Beeson. ........ .. 405 Report on Spectrographic Methods. By W. T. Mathis. ................. .. 411 CONTRIBUTED PAPERS Determination of Nitrofurazone in Feeds. By Victor R. Ells, Edward S. Mc- Kay, and Henry E. PauL..... ... .. .... .. .. .. ... .. .. .. .. ... .. ... 417 Reaction of Calcium Carbonate with Soils and Determination of Their Cal- cium Sorption Capacities. By W. M. Shaw.. ...................... .. 421 Rapid Determination of Cation and Anion Exchange Properties and pHe of Soils. By A. Mehlich. .......................................... .. 445 The Sugar Content of Hydrol (Corn Feeding Molasses). By George T. Peck- ham, Jr., and C. E. EngeL... ................................... .. 454 Use-Dilution Confirmation Tests for Results Obtained by Phenol Coefficient Methods. By L. S. Stuart, L. F. Ortenzio, and J. L. Friedl. ......... .. 466 The Resistance of Bacterial Spores to Constant Boiling Hydrochloric Acid. By L. F. Ortenzio, L. S. Stuart, and J. L. Friedl. ..................... .. 480 Analysis of Manganese Ethylenebisdithiocarbamate Compositions and Resi- dues. By W. K. Lowen. ........................................ .. 484 An Analytical System for Determining Phosphorus Compounds in Plant Ma­ terials. By Walter A. Pons, Jr., Mack F. Stansbury, and Carroll L. Hoff- pauir... ... .. .. .. .. .. .... .. .. .. .. .. .. .. 492 The Chemical Composition of Certain Grades of Type 11, American Flue­ Cured Tobacco.