112 EXPERIMENT STATION RECORD, 



results were very unsatisfactor}'. The percentage of albumin in milk 

 decreased from 0.525 per cent in fresh samples to 0.157 per cent in 

 samples preserved for 1 days with formalin. Other tests showed that 

 formalin tends to prevent the coagulation of albumin by heat, the 

 amount of formalin added and the time that it is in contact with the milk 

 both affecting the coagulal^ility. No recommendations were made. 

 The referee was instructed to study further the effect of preservatives 

 upon albumin in milk. 



FOODS AND FEEDING STUFFS. 



The work on feeding stuffs reported by the referee, C. A. Browne, jr. , 

 was practically along lines followed l\y preceding referees, and con- 

 sisted mainly in the determination of moisture, fat, and pentosans in 

 samples of timothy hay and distillers' grains according to the official 

 methods and in the comparison of the official and Konig methods for 

 crude ffber on both samples. Based upon results obtained by 9 analysts, 

 the referee recommended a further study of the Konig method with 

 the additional treatment of the fiber with alkali, as Iw the official 

 method. The referee also recommended the substitution of Krober's 

 factors for calculating pentoses and pentosans for those given in the 

 provisional method, which recommendation was adopted. 



A paper by E. Gudeman, dealing with the manufacture and analysis 

 of gluten feeds, was read b}^ J. K. Haywood. Methods for the deter- 

 mination of fat and of acidity were compared. In a letter from C. L. 

 Parsons, read by H. W. Wiley, suggestions were made concerning 

 methods for the analysis of malt liquors. 



FOOD ADULTERATIONS. 



The referee on this subject, W. D. Bigelow, reported that an attempt 

 had been made to have reports on cereal products, tea and coffee, and 

 cocoa and chocolate, the three subjects not completed at the last meet- 

 ing. Two of the reports were ready. Many of the subjects were sub- 

 divided and only parts of the subjects given attention. The referee 

 recommended that provisional methods, embodying the minor changes 

 suggested by the referees, be published. Acting under the advice of 

 the executive committee the referee was authorizcnl to make such 

 assignments of work as he ma}' see fit and to appoint his associate ref- 

 erees. The changes made in the provisional methods adopted at the 

 last convention and published in Bulletin 65 of the Bureau of Chem- 

 istry were adopted provisionally. 



SUGAR. 



The report on sugar was made by the referee, G. L. Spencer, and 

 included a brief outline of the experimental work conducted by his 



