RECENT AMERICAN WORK ON FEEDING STUFB^S. 521 



sented by G. S. Fraps. The result of a test of Konig's method, with 

 mod iticat ions, for determining pentosan-free crude ti her was reported. 

 The method is found lo ])e much shorter than the official one, the 

 substance ])eing digested, filtered, and washed in three hours. It has 

 the following advantages: It yields a tiber practically free from 

 pentosans, the mani])ulations are less complicated, and the time is 

 shortened. It requires further study, however, in its application to 

 cotton-seed meal. The author suggested that it be further studied by 

 the referee. 



The use of air in moisture determination, except in substances con- 

 taining drying oils, was referred l>y the association to the referee 

 for further study. In the diastase method for starch 20 cubic centi- 

 meters was adopted instead of 40 cubic centimeters in digesting with 

 malt extract. In neutralizing, sodium hydrate in a cooled solution 

 was adopted in lieu of sodium carbonate while hot. Instead of digest- 

 ing over night with malt extract, two or three hours was considered 

 sufficient. The reconunendation for the phloroglucin method was 

 adopted, and several other minor moditications were made. It was 

 recommended that the referee take up the stud}^ of the Konig method 

 for the determination of crude tiber. 



At the convention of 1902, according to C. A. Browne, jr., referee 

 of feeding stuffs, the work during the year was practically along the 

 same lines as in the past and consisted mainh^ in the determination of 

 the moisture, fat, and pentosans in samples of timothy hay and dis- 

 tillers' grains according to the official methods and in the comparison 

 of the official and Konig methods for crude liber on both samples. 

 Based upon results obtained by nine analysts, the referee recom- 

 mended a further study of the Konig method with the additional treat- 

 ment of the liber with alkali, as by 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 reconunendation was adopted. 



A pap(>r by E. Gudeman. dealing with the manufacture and analysis 

 of gluten feeds, was read. In this paper methods for the determi- 

 nation of fat and of the acidity were compared. 



At the convention of official agricultural chemists held in 1903, F. D. 

 Fuller" reported the results of the official and the Dormeyer methods 

 of estimating fat, the higher results being obtained by the latter 

 method. The official method and the Konig method for estimatinir 

 crude tiber were also studied. 



C A. Browne, jr.,'' at the same meeting, among other matters, 

 reported the results of analyses of cattle feeds rich in protein. It was 



« Experiment Station Record XV, p. 435. 

 ^ F.xiJeriment Station Record XV, p. 48(5. 



