522 KEroHT OK OFFICE OF KXI'KKIMKNT STATIONS. 



foihul tliiit when the ri'siducs from ordiiiiuy ctlicr cxtniction were 

 (li«jf«'st('(l with ])(>j)siii iulditioMiil (|Uiiiititi('s of fat were obtaiiuMl })y 

 iiyain cxti'actiiij^- with (>th(>r. 



I'luU'r special studies of analytical methods the followinc!" articles 

 should also he mentioiuHl: 



K. ^^'. ThatcluM"" pultlished an article dealing with lilt lal ion in the 

 deternunation of crude fiber. He modifies tlu^ ollicial method b}' 

 tilterino- throuj^h asl)esto.s wool, placed in a larji^e funnel, on a platimun 

 cone. The residue is washed into a platinum dish, the water evapo- 

 rated, and the determination completed as usual. This procedure is 

 especially adapted to the olycerol-sul})huric acid ndxture used in the 

 Konio- method for crude lil)er. 



C. A. Browne, jr., andC. P. Beistlc,'' in an article on the discrepancies 

 in the analyses of feedin*^- stuffs, studied pentosans and similar bodies, 

 and (t. S. Fraps*" studied tlu; methods of estimatinj^- pentosans. 



The nature, determination, and distribution of pentosans in Sea- 

 island cotton was studied b}?^ F. S. Shiver,'^ who compared the phenyl- 

 hydrazin and phloroglucin methods of determination. 

 ■ C. L. Penny *^ devised a multiple fat extractor. An apparatus 

 designed to overcome certain difficulties in dcterminino- fat was 

 des(;ribed by H. J. Wheeler and B. L. Hartwell.' 



F. G. Benedictf^ proposed a modification of the method of distilling 

 ammonia in the determination of nitrogen. The methods of deter- 

 mining proteid nitrogen in vegetable materials were critically studied 

 by G. S. Fraps and J. A. Bizzell. '* 



In continuation of earlier work on the constituents of proteids T. B. 

 Osborne' has reported important articles, including (1) an investiga- 

 tion on the hydrolytic derivative of the globulin edestin and its rela- 

 tion to Weyl's albuminate and the histon group, (2) the basic character 

 of the protein molecule and the reactions of edestin with definite 

 quantities of acids and alkalis, and (3) a study of sulphur in protein 

 bodies. (See also p. .517.) 



E. Gudemau'' studied the determination of fat and acidity in gluten 

 feeds. He found that dr^nng corn gluten feeds in hydrogen, vacuum, 

 or air modifies them sufficiently to give low results for the percentage 



"Jour. Amer. Chem. Soc, 24 (1902), p. 1210. 



^-.Tour. Amer. Chem. Soc, 23 (1901), p. 229. 



'Amer. Chem. Jour., 25 (1901), p. 501. 



<^ South Carolina Sta. Bui. 78. 



(■ Delaware Sta. Rpt. 1900, p. 85. 



/ Rho.le Island Sta. Rpt. 1901, p. 268. 



r/Jour. Amer. Chem. Soc., 22 (1900), p. 259. 



A North Carolina Sta. Bui. 174. 



'■ Connecticut State Sta. Rpt. 1900, pt. 4., i>p. 388-471. 



./Science, n. ser., 16 (1902), p. 287. 



