910 EXPERIMENT STATION RECORD. 



.'/(/.s'; (ihs. in liiochvm. ZcnIhI., 8 (JDOH), No. 1-2, pi). HI, »^).— The luetliod 

 »l(>scriln'd (U'poiiils upoii llic (leteriiiinatlon of Ibc iiitroficii content of the 

 nwiteri.il exiriictcd l>.v iso-aniyl alcohol. 



An analysis of cloves, T. K. IlouciSON {Amcr. Jour. Phann., 81 (l',)0'J), Xo. 1, 

 Jill, (l-H). — Acconlinj; lo Die antlioi', the three dcterininations on which the great- 

 est reliance can be iilaced in the analysis of cloves are ash, nitroj^eu, and 

 oxygen etiuivalent. "The determination of the alcoholic extract is of no 

 practical value, the deterunnatiou of the crude fiber and moisture may in 

 some cases be of considerable use. whereas in others it may be of uo value 

 whatsoever; the determination of the ether extract is advisable." 



Judging black pepper, (J. Graff (Zfxcli. Offcntl. Chvm., IJ, (1908), Xo. 22, 

 PI). .'/.,'.7-'/ J7 ). — Accordinj; to the author's analytical studies and critical sum- 

 mary of the work of other invest ij^a tors, the determination of crude fiber 

 content, in addition to the ash and sand content, atl"ords the best data for 

 judfiinj; the (luality of jiepper. He recommends that 37 to 17.5 per cent crude 

 fiber be adopted as a standard for whole and ground pepper. 



The sanitary composition of cow's milk, M. Donsktt {Pure Product.^, 5 

 {1009), Xo. 1, pp. 7-10), — The author insists that milk inspection not be con- 

 fined to the content of nutrients, but should extend to the dirt content. The 

 sedimentation and the Gerber filtration methods of estimating dirt conten't in 

 milk are described. 



The examination of milk for dirt and leucocytes, C. IIkvis {.Jour. R<nj. Inst. 

 Pub. Health, 16 (IDOS), Xo. 12, pp. 7.i'i-7iO).—}ilethoAii now in use are de- 

 scribed, together WMth a new method for estimating the dirt content which 

 has been devised by the author. In this the sample of milk is ceutrifuged and 

 treated with eau de Javelle to dissolve the leucocytes. 



The determination of the Reichert-Meissl number by saponification with 

 glycerin-potash, M. Siegfeld {Vticm. Ztg., 32 {1908), Xo. 93, p. 112S). — The 

 author ])refers to saponify with potash rather than with soda. Comparative 

 results with the two alkalis are given. 



The analysis of cacao butter, G. Halphen {Jour. PJiarm. et Ctiim., 6. scr., 

 28 {1908), Xo. 8, pp. 3.',5, 3.',6 ; ahs. in Analyst, 33 {1908), No. 393, p. J,68).— 

 The author describes a method of detecting vegetable fats based on the differ- 

 ence in solubility of the respective bromin derivatives. 



The estimation of cocoanut oil in butter, R. Ross {Analyst, 33 {1908), No. 

 393, pp. -iJ?W/6,J). — This article contains results of investigations on insoluble 

 fatty acids. The variations in the composition of dfferent butters and cocoanut 

 oils are so great that the fixing of reliable constants Is not deemed i)ossible. 



A method for detecting synthetic color in butter, R. W. Cornelison {Jour, 

 Amcr. Chem. Soc, 30 {1908), No. 9, pp. lJ,78-l-'i81).—A new method is described 

 by the author in which the clear dry fat is melted in glacial acetic acid. The 

 clear acid is drawn off and tested with concentrated nitric acid, sulphuric acid, 

 and sulphuric acid and ether. The results of the author's investigations are 

 given. 



The Rabild tube {X. Y. Produce Rer. and Amcr. Cream.. 27 {1908), Nos. 5, 

 j). 178; 7. /*. 28.')). — This tube is made for the purjtose of making a rapid calcu- 

 lation of overrun in butter. Some butter makers use it for estimating the 

 moisture content, but it is stated that as accurate results can not be obtained 

 it can not be reconmiended for this purpose. 



Some of the constituents of saffron and a method for the valuation of 

 saffron, R. Pfyl and W. Scheitz {Ztschr. Untersuch. Nalir. u. Oenussmtl., 16 

 (1908), Xo. 6, pp. 337-3.')2; ahs. in Analyst, 33 {1908), No. 393, pp. 1,72, Ip'S).— 

 The authors isolated two sugars and a substance similar to the picrocrocin of 

 Kayser from the petroleum spirit and the chloroform extracts of pure saffron. 



