212 EXPERIMENT STATION EECORD, 



wlieu a sample diluted with 50 volumes of water is observed throusli the bottom 

 of a glass held about 1 ft. above a lighted candle. 



A new apparatus for the determination of catalase in milk, II. Burri and 

 W. Staub (Ztschr. Untcrsuch. Nahr. u. Geniissmtl., 17 {190D), No. 2, pp. 88, 89, 

 fig. 1; Rev. G&n. Lait, 7 (1909), No. 12, pp. 272-27 Jf, fig. 1; ahs. in Analyst, SJf 

 (1909), No. 397, p. 160, fig. 1). — This apparatus has been previously noted 

 (E. S. R., 2(». p. 1011). 



The detection of coconut oil in butter and lard, G. Fkndler {.-Vrh. Phnrm. 

 Inst. Tliiiv. BcrHii. .5 {1907). pp. 261-278, figs. 2).— Analytical data of butter, 

 lard, and mixtures of the same with coconut oil are reported. The methods em- 

 ployed are based on the fact that the nonvolatile lauric and myristic acids are 

 soluble in 60 per cent alcohol. Because of the large amount of these acids in 

 coconut oil an addition of 10 per cent to butter can be detected. In testing for 

 adulterations of lard the Reichert-Meissl value must also be taken into consider-, 

 ation. Palm oil as an adulterant can be detected in the same way, though a 

 distinction between palm and coconut oils can not be made with this method. 

 Tests are also reported for detecting coconut oil by means of the melting points 

 of the different ethyl esters of the fatty acids. 



Color reaction of oleic acid, A. MANf:A (Bui. fe'oc. Sti. Biicarcsti, 17 (1908), 

 No. 3-J,, pp. 256, 257; ahs. in Chem. Zciithl., 1908, II, No. 20, p. 1702; Jour. Chcm. 

 Soc. [Londonl. 96 (1909), No. 556, II, p. WO). — Vegetable fibers when mixed with 

 oleic acid or its esters and strong sulphuric acid give a red coloration on the 

 addition of water. This reaction may be used for identifying oleic acid and for 

 distinguishing between vegetable and animal fibers. 



Official method of the American Leather Chemists Association for tannin 

 analysis (Jour. Anicr. Leather CJieiii. .l.s-.s-or., '/ (1909). No. 5. pp. 118-138). — 

 These methods include directions for taking and jireparing the samples, analy- 

 sis of extracts, liquors, oils, fats, etc. 



Ethereal oils, H. Haensel (Ahs. in Jour. Chem. Koc. [London^, 96 (1909), 

 No. 556, I, pp. Ill, 112). — This report contains analytical data on oils from a 

 large number of plants of commercial value. 



Essential oils (8lemiann. Rpt. Scliiiiunel and Co., 1908, Nov., pp. 5-232, pi. 1, 

 figs. 22; ahs. in Jour. Chcm. Soc. [London]. 96 (1909), No. 556. I, pp. 112-115; 

 Chem. Zenthl., 1909, I, No. 19, pp. 156 '--1 566). —X collection of data on commer- 

 cial oils, much of which has been abstracted in various journals. 



Animal fats and oils, W. H. Bentley (8ci. Amcr. Sup., 67 (1909), No. 1738, 

 pp. 270, 271). — This is a brief popular account of the preparation of commercial 

 grades of lards, tallows, oils, and greases. 



Beport of the chemical division, B. L. IIartweee (Rhode Island Sta. Rpt. 

 1908, pp. 232-2.'i2). — This is a summary account of work during the year on 

 the effect of sodium on plant composition, form of iihos])horus in turnips, avail- 

 ability of nitrogenous manures, nitrogen gathering value of legumes, the wire- 

 basket method for determining the manurial requirements of soils, soda as a 

 supplement to potash as a plant nutrient, fertilizing value of potash in feldspar, 

 effect of acid and of ferrous sulphate on seedlings, feeding stuffs and fertilizer 

 inspection, and analyses of miscellaneous materials, including sludge, wool dust, 

 dried blood, dissolved bone, ground bone, sulphate of ammonia, nitrate of soda, 

 potassium nitrate, sulphate, muriate, and carbonate, common salt, sodium car- 

 bonate, ground limestone, chicken feeds, and molasses. 



Labor and time saving apparatus in American analytical laboratories, 

 V. Samter (Ztschr. Chem. Apparatenlc, 3 (1908), No. 2',. pp. 569-573. figs. 6; 

 ahs. in Chem. Zenthl., 1909, I, No. 11, p. 885, figs. 2).— The apparatus described 

 include a grinding apparatus, an automatic sampler, a filtering apparatus, and 

 the Jones reductor. 



