416 EXPEBIMENT STATION RECORD. 1%'ul. 37 



encps In tlie microscopic appearance of whole milk and skim luilk powders are 

 submitted. 



A further contribution to the method for the determination of fat in 

 cheese, N. A. Bkodbick-I'ittaed {Ztschr. UntersucJt. Kahr. u. Gcnussmtl., 32 

 (1916), No. 8, pp. 354-S58). — Data submitted show that the presence of greater 

 or lesser amounts of lactic acid in cheese does not exercise an influence on the 

 results in the determination of fat by extraction with ether. The difference 

 in the acid content of fat obtained by extraction with petroleum ether and that 

 extracted with ether is considered to be chiefly due to the insolubility of the 

 oiy-fatty acids in petroleum ether. 



From re.sults previously obtained, together with those submitted, the ex- 

 traction with ether is considered to be tlie preferable procedure. 



The microscopic examination of colza and rape seed cake, J. A. Ezenuam 

 (Vcrslag. Landbouwk. Onderzoek. Rijkslandbouwproefstat. IXttherlands]. Xo. 

 20 (1917), pp. 1-11, pis. 5). — The preparation of samples for microscopic ex- 

 amination and the microscopic appearance of various species of Brassica are 

 described. The value of micro-scopical examination in the control of feeding 

 stuffs is indicated. 



The chemical examination of rape seed press cake with reference to its 

 deleterious effect as a feeding stuff, G. B. Van Kampe.n (Verslag. Landbouwk. 

 Onderzoek. Rijkslandbouicprocfsiat. [Netheilands], No. 20 (1917), pp. 53-70. 

 fig. 1). — Previous work in regard to the determination of mustard oil in 

 samples of rape seed cake is reviewed. 



From the study reported it, is concluded that when the odor test is used 

 to determine whether or not the sample is harmful it should always be made 

 with the addition of thymol or sodium fluorid. The determination of the 

 amount of mustard oils and the nitrogen content of the thiosiuamins is con- 

 sidered to be a more reliable procedure. The limiting figures for these sub- 

 stances reportetl by earlier workers are, however, not considered to be reliable. 



The determination of the water-soluble carbohydrates is deemed to be very 

 Important in determining the freshne.ss of the sample and thus indicating the 

 probable harmfulness of the material as a feeding stuff. 



Cider and the cider industi-y in England, G. Wakcoli.ieb i;t al. (Rul. Mens. 

 Off. Rcnseig. Agr. [Fans], 15 (1916), Jan.^uly, pp. 167-199: Auy.-Hept., pp. 

 S14-S35). — This is a detailed report of the findings of the I-'rciich commission 

 appointed by the minis;ter of agriculture to investigate the industry in England. 



Washing fruits and vegetables, A. W. Bitting (Nat. Canners Assoc. Bui. 

 12 (1917), pp. 28, figs. 5i).— This is a brief general discussion of the subject, 

 together with a description of the various forms of apparatus which have been 

 proposed and used in the canning industry. 



Beet molasses: Its composition and utilization, S. J. Osborn (Metallurg. 

 and Cliem. Engin.. 16 (1917). No. 8, pp. 436-443, figs. 3). — This is a general dis- 

 cussion of the subject under the topics of theories of molasses formation, com- 

 mercial importance of mola.sses formation, melassigenic action of various non- 

 sugars, comix)sition of molasses, cane molasses, utilization of beet molasses, 

 cattle feeding, alcohol production, molasses processes, recovery of p<»tash, and 

 miscellaneous processes. 



Notes on the preparation, by the distillation and by the combustion of 

 wood, of acid coagulants, and on their effect on the quality of rubber. B. J. 

 Eaton and G. S. Whitby (Agr. Bui. Fed. Malay States, 5 (1917), No. 4, pp. 

 124-134)- — Data relative to the use of crude pyroUgneous acid, obtaineil from 

 rubber wood and mangrove, and a "smoke solution" (obtained by passmg 

 smoke through water) as coagulants, together with vulcanization and strength 

 tpsts, are reported. 



