CHEMISTRY. 315 



On the estimation of glycerin in the analysis of wax, F. Beilsteix and R. 

 Rinne (Bid. Acad. Imp. Sci. St. Petersburg, 5. set:, 5 (1896), No. 5, pp. 288-294). 



A study of the nitrogen contained in wine, J. Laborde ( Ann. Inst. Pasteur, 12 

 (1898), Xo. 8, pp. 517-540). 



Characteristic reaction for cotton-seed oil, G. Halphen ( Jour. Pharm. et Chim., 

 6. ser., 6 (1897), Xo. 9, p. 892).— Equal parts (about 1 to 3 cc. each) of amyl alcohol, 

 the oil to be tested, and carbon bisulphid containing 1 per cent of sulphur in solu- 

 tion, are mixed in a test tube and heated 10 to 15 minutes in a bath of boiling salt 

 water. "Only cotton-seed oil will give a red color by this treatment." — b. h. iiite. 



Determination of tannin, L. ViGNON (Compt. Bend. Acad. Sci. Paris, 127 (1S98), 

 No. 8, pp. 869-872). 



Estimation of chlorin, bromin, and iodin in saline waters, P. A. E. Richards 

 (Chem. News, 76 (1897), Xo. 1986, p. 293). 



Zinc in water, P. A. E. Richards (Chem. News, 76 (1897), Xo. 1986, p. 293). 



Introduction to the micro-chemical analyses of the most important organic 

 compounds, Beiirens (Anleitung zur mikrochemisehen Analyse der wichtigsten organ* 

 ischen Verbindungen. Hamburg and Leipsio : L. Voss, 1897, pt. 4, pp. 12S,figs. Di ; rev, 

 in Centbl. Bakt. u. Bar., 1. Abt., 24 (189S), Xo. 2-3, p. 101). 



A new asbestus filter tube, A. Goske (Chem. Ztg., 22 (1898), Xo. 4, p. 21, fig. 1.— 

 A conical stricture is made in a combustion tube, and into this stricture a small hol- 

 low perforated ball is fitted. The asbestus is lightly packed around and over this 



ball. — J. T. ANDERSON. 



A new filter apparatus with a two-way cock and attached arms running out 

 on two sides (Chem. Ztg., 22 (1898), Xo. 6, p. 39, fig. 1).— Especially useful in cases 

 where precipitates are to be washed with 2 liquids in succession and it is desired 

 to collect the wash liquids separately. The 2 arms of the apparatus are connected 

 with separate receptacles, and by turning the stopcock properly the liquid from the 

 funnel may be made to flow into the one or the other at pleasure. — j. t. Anderson. 



A practical filter stand, II. Faber (Chem. Ztg., 22 (1898), Xo. 6, pp. 39, 40, fig. 1).— 

 Two circular discs of unequal diameters are securely fastened together at a fixed 

 distance apart, one over the other, and so supported on a vertical axis that they 

 may revolve together around it. The upper disc is the smaller and has a circle of 

 holes near the rim at suitable distances apart to bold the, funnels. The filter glasses 

 and the beakers both rest below on the other disc. A slight modification is sug- 

 gested by which the smaller disc is made of adjustable height above the lower. 

 Economy of space on the work table is the advantage claimed for this stand. — J. r. 



ANDERSON. 



An easily constructed apparatus for fractional distillation in vacuo, R. L. 



Steini.in (Chem. Ztg., 22 (1898), Xo. 18, pp. 157, 158, figs. 2). 



An efficient gas-pressure regulator, P. Muriull (Jour. Appl. Micros., 1 (1S9S), 

 Xo. 5, pp. 92-94, figs. 4). 



On the reaction of filter paper, L. Magnier (Jour. Pharm. et Chim., 6. ser., 6 (1S97), 

 Xo. 10, p. 438). — The statement is made that filter papers always retain a small quan- 

 tity of acid, no matter how well they are washed with cold water. Prolonged wash- 

 ing with boiling water removes the last traces of acid. — b. h. hite. 



Chemical department, E. F. Ladd (North Dakota Sta. Bpt. 1897, pp. 9-16). — A 

 summary of the work of this department of the station during the year, including 

 a summary of observations ou temperature and rainfall; analyses of 9 samples of 

 soil, 7 of baking powders, and 4 of corn fodder, with notes on the examination of 

 well waters and on sugar beets grown in different parts of the State. 



Report of the chemist, W. R. Perkins (Mississippi Sta. Rpt. 1897, pp. 8-10). — This 

 is a brief account of the work of the year in this department of the station, includ- 

 ing a note on the soil work which has been undertaken by the station, analyses 

 (mineral constituents) of 4 samples of artesian water, determinations of nitrogen iu 

 rainfall 1894-1897, and a statement of miscellaneous chemical work. 



