en km i sir v. 227 



Estimating sugar in cocoa products, Jeserich ( Ztschr. OeffenU. Ch m., 9 ( 1908), 

 pp.452— 454; abs. in Ztschr. Untersuch. Ndhr. u. Genussmtl., 7 (1904), No. 9, p. 562). 



Examining and judging cocoa products, Filsinger {Ztschr. OeffenU. Chem., 9 

 (1903),]>. 7; abs. in Hyg. Rundschau, 14 I 1904), No. 3, pp. 146, 147).— Analytical data 



are reported and discussed with special reference to the examination of chocolate ami 

 other cocoa products. 



Note on the identification of Bombay mace in powdered mace, W. Bi sse 

 {Ztschr. Untersuch. Nahr. it. Genussmtl., 7 (1904), No. 10, pp. 590,591). — The author 

 considers his method reliable. 



Note on the examination of molasses feeds for fat and sugar, I). J. Hissink 

 I Landw. Vers. Stat, 60 (1904), No. 1-2, pp. 125-134). — Different methods are com- 

 pared and discussed. 



The preparation of crude fiber from plant fibers containing lignin by 

 means of sodium superoxid, A. Duschetschnik (Zhur. Rusk. Fi:. Khim. Obshch., 

 35 i 1903), No. 12, Protok.,pp. 159, 160; abs. in Ztschr. Untersuch. Nahr. it. Genussmtl., 

 ; ' 1904), No. 10, p. 631). — CJsing sodium superoxid mixed with magnesium sulphate, 



the author obtained very favorable results in separating crude fiber from spruce \v 1 



and from jute. The method of procedure is described. 



The estimation of starch in substances containing pentosan, S. Weisek and 

 A. Zaitschek I Landw. Vers. Stat., 58 (1903), No. 3-4, pp. 219-231).— The experi- 

 mental data which are reported led the author to conclude that in the analyses of 

 feeding stuffs pentosans should be estimated as well as starch if accurate results are 

 desired. 



The true starch content can be calculated, he points out, if the amount of copper 

 precipitated by the reducing bodies formed from pentosans is deducted from the 

 amount precipitated by the total reducing bodies obtained in the usual methods of 

 analyses. Estimating the starch and pentosan is a decided advantage, as it lessens 

 the amount of nitrogen-free extract, and so makes for accuracy. 



Methods for the quantitative chemical analysis of the brain and cord, W. 

 Koch {Amer. Jour. Physiol., 11 (1904), No. 3, pp. 303-329).— Analyses of white and 

 gray matter of human brain with special reference to the distribution of phosphorus 

 and nitrogen are reported, the analyses being illustrative of the analytical methods 

 described. 



Concerning the solution and swelling of colloids, K. Spiro (Beitr. Chem. 

 Physiol, a. Pathol., 5 ( 1904), No. 5-6, pp. 276-296). — Studies of gelatin by methods 

 of physical chemistry are reported and discussed. 



Fourth annual report of the agricultural chemist for the year 1902-1903, 

 A. Lehmanx [Ih'i>t. Agr. Mysort State, Hjif. Agr. Chem., 1902-3, pp. 27). — Thisreporl 

 "contains results of plat experiments, [and] gives the composition of various soils, 

 fertilizers, coffees, oils, and water analyzed during the year. It gives also a few 

 notes on entomology and a short report on a rice huller." 



A rapid accurate method for the volumetric estimation of carbon dioxid, 

 T. Ma"( a ka i . I nalyst, 29 ( 1904), No. 338, pp. 152, 153, fig. 1).— A. method based upon the 

 fact that barium carbonate behaves like an alkali toward methyl orange is described. 

 The carbon dioxid evolved in the usual way is collected in a barium hydrate solu- 

 tion, the barium carbonate formed being titrated with standard acid, using methyl 

 orange as an indicator. 



The filtration and incineration of slimy precipitates, M. Dittrich {Ber. Devi. 

 Chem. Gesell,87(1904),pp. 1840-1842; aba. in Chem. Centbl, 1904,1, No.22,p. 1501).— 

 The filtration and incineration of such precipitates are facilitated by shaking them 

 up with water and filter paper until the latter is reduced to a fine pulp. 



Note on the use of hydrazin sulphate in eudiometric analysis, J. deGirard 

 and A. ije Saporta {Bui. Hoc. Chim. Paris, S.ser., 31 (1904), No. 15, pp. 905-907). 



