114 EXPERIMENT STATION RECORD. 



mentlion 7.38 to 13.21 per cent. The results are compared with peppermint 

 oils from various countries. 



Determining' oil of sesame in arachis oils, II. Kueis {Mitt. Lchcnsm. TJnter- 

 stich. u. llyg., 8chiceiz. Usndhtsamt., 1 (I'JlO), No. 5, pp. 2V3, 29Ji; ahs. in Chern. 

 Ztg., 34 {19 10), No. 117, p. lOJ/O). — The author lays particular stress upon 

 the value of estimating the sesamin content of arachis oils. As the result of 

 examining microscopically 20 such oils, which contained quantities varying from 

 1 to 5 per cent of pure arachis oils, using 150 cc. of oil at one time and with 

 the aid of Bomer's reaction (acetic anhydrid and concentrated sulphuric acid), 

 he was able to establish a fairly good quantitative method for sesame oil in 

 those oils. 



[Palm oil; its utilization as an edible fat], E. Fickendey {Tropenpflanzer, 

 U {1910), No. 11, pp. 566-570; abs. in Jour. 8oc. Chem. Indus., 29 {1910), No. 

 22, p. 1319). — As the production of palm oil is now commercially feasible, the 

 author points out the following criteria which must be taken into consideration 

 in producing a good product. They are (1) the use of absolutely ripe and 

 fresh fruit, (2) the necessity of destroying the lipolytic enzym, and (3) the 

 rapid treatment of the fruit to avoid undue contamination with micro- 

 organisms. 



Purification of insoluble fatty acids, E. B. Holland {Ahs. in Science, n. ser., 

 33 {1911), No. S'i'i, pp. 3'i-'i, 3Ji'>). — "As the author found it impossible to pur- 

 chase insoluble fatty acids of a satisfactory quality," it became necessary to 

 undertake a study of various methods for their purification. The methods that 

 seemed the best adapted for the purpose were (a) distillation of the fatty acids 

 in vacuo, (b) crystallization from alcohol, and (c) distillation of the ethyl 

 esters in A^acuo, and all were given extended trial. 



" It was found that while saturated fatty acids may be purified by distilla- 

 tion of either the acids or their ethyl esters, the latter method is less hazardous 

 and much easier to manipulate, although more steps are required. Crystalliza- 

 tion is a finishing rather than an initial process of purification." 



Detection of albumin in animal urine with tablet reagents, P. E. Bei'er 

 ( tiher den Nachtveis von Eiweiss im Tierharn mit Merck's Tablctten. Inaufj. Diss., 

 Univ. Bern, 1909, pp. 39, tables Jj). — The author tested Merck's tablet reagents (Es- 

 bach's test, picric and citric acids, Riegler's /3-naphthalene sulphonic acid, and 

 Merck's "A and B," which consists of (A) citric acid and (B) potassium ferri- 

 cyanid) in regard to their relative value for detecting albumin in human, dog, 

 horse, and bovine urines, and concludes that Kiegler's test furnishes the most 

 accurate and constant results. He also tested the value of Merck's Esbach 

 tablets for detecting creatinin in urine, and found that these served the purpose 

 very well. 



A bibliography of 7.5 titles is appended. 



On the estimation of urea, A. E. Taylok {Jour. Biol. Chem., 9 {1911), No. 1, 

 pp. 25-28). — ^A discussion in regard to the comparative value of the Folin (E. S. 

 R., 17, p. 165) and Benedict (E. S. R., 20, p. 1105) methods for estimating urea 

 in urine. 



Identification of methyl alcohol in ethyl alcohol, H. Engelhaedt and H. W. 

 Jones {Merck's Rpt., 20 {1911), No. 1, pp. 10-12). — The experiments were 

 confined principally to those methods in which the oxidation is carried out in 

 an acid medium with ]iotassium permanganate, potassium bichromate, or am- 

 monium persulphate. The results show that Hinkel's method " is the most 

 satisfactory, and that with it less than 0.5 per cent of methyl alcohol in ethyl 

 alcohol can be detected. 



«.Vualyst, 33 (1908), No. 392, pp. 417-419. 



