800 EXPERIMENT STATION EECORD. 



meat products, wbicli was reported for the associate referee on meat proteins, 

 A. D. Emniett, continued previous work, using desiccated lean beef and a liigli- 

 grade beef extract, and witb determinations of total nitrogen, insoluble nitro- 

 gen, coagulable nitrogen, creatin, and creatinin. The Kjeldabl-Gunning-Arnold 

 metbod for nitrogen gave as good results as tbe Kjeldabl or the Gunning 

 method, and was adopted as official. The proposed method for insoluble, solu- 

 ble, and heat coagulable nitrogen gave somewhat better results than the pro- 

 visional method, esi>ecially as to soluble and coagulable nitrogen, and was 

 adopted as provisional. The figures for creatin and creatinin with the Folin 

 method showed marked differences, due to various causes. The method as 

 modified by the referee was approved for final action in 1914. A paper on the 

 estimation of glycerin in meat juices and extracts was presented by F. C. Cook. 



L. L. Van Slyke and O. B. Winter gave a paper on a study of some conditions 

 affecting the precipitation of casein. The report of the referee on dairy prod- 

 ucts, E. M. Bailey, consisted solely of a recommendation for the provisional 

 adoption of the copper sulphate method for preparing milk serum for use in 

 making observations with the immersion refractometer. The subject will be 

 further considered. 



The referee on feeds and feeding stuffs, W. J. Jones, Jr., as a result of 

 cooperative work pointed ouc that in most cases higher amounts of fat are 

 extracted from all feeding stuffs by the official method than with the proposed 

 petroleum ether method. Three hours of extraction with petroleum ether was 

 not sufficient to secure the total extract. Even with cotton-seed meal, petroleum 

 ether from different sources gave different results, and the extracts must be 

 dried at least 3 hours in order to secure constant weight. Moisture affected 

 the results obtained by either the official or petroleum ether method. It was 

 voted not to recognize the petroleum ether method for cotton-seed products. 



W. E. Cross, the referee on sugar, reported studies in determining moisture 

 in sugar with the Abbe refractometer and the immersion refractometer. and 

 a comparison of the new direct polarimetric method for molasses with the 

 modified Clerget method. 



J. B. Rather, as referee, reported progress as to the testing of chemical 

 reagents. 



The final session was confined to the report of the associate referee on 

 synthetic products, W. O. Emei-y, and to papers on the estimation and separa- 

 tion of antipyrin from various synthetic products by means of periodid, by 

 W. O. Emery and S. Palkin, and on the analysis of medicated soft drinks, by 

 B. H. St. John. W. F. Hand exhibited a convenient form of reflux condenser 

 and extraction apparatus. 



During the convention. Dr. H. W. Wiley, the honorary president, addressed 

 the association. A resolution was adopted by the association for the appoint- 

 ment of a committee to memorialize the President of the United States and 

 Congress to enact legislation authorizing the Secretary of Agriculture to estab- 

 lish definitions for better enforcement of tbe Food and Drugs Act. A com- 

 mittee on definitions, consisting of J. P. Street, J. Hortvet, and W. Frear, 

 was also appointed to cooperate with similar committees of the American 

 Food and Dairy Commission and the Department of Agriculture. Additional 

 referees were authorized for a study of the Kjeldahl method, alkalis in soils, 

 feeding stuff adulteration, and for medicinal plants and drugs. 



The following officers were elected for the coming year : Honorary president, 

 H. W. Wiley, Washington, D. C. ; president, E. F. Ladd, Fargo, N. Dak.; vice 

 president, C. H. Jones, Burlington, Vt. ; secretary, O. L. Alsberg, Washington, 

 D. C. ; additional members of the executive committee, J. D. Turner, Lexing- 

 ton, Ky. ; and W. F. Hand, Agricultural College, Miss. The 1914 meeting is to 

 be held in Washington. 



