920 EXPERIMENT STATION RECORD. 



announced the discovery of glycocoll as the principal amid constituent of sugar 

 cane. lie now announces the discovery of glycollic acid in sugar cane, and describes 

 its separation, properties, etc., and discusses its bearing in relation to sugar manu- 

 facture and sugar chemistry, as well as its physiological significance in the plant. 



The combinations of carbon in humus substances, G. Andre {Compt. Rend. Acad. 

 Sci. Paris, US {1899), Xo. 8, pp. 513-5 HI). —In previous articles (K. S. R., 10, p. 830) the 

 author has reported investigations on the form of nitrogen in humus. This article 

 discusses the form of carbon in these substances as determined by methods similar 

 to those employed in the investigations of the nitrogen compounds. 



The nitrogenous compounds in fungi, E. WlNTERSTEiN (Ztschr. Physiol. Client., !<\ 

 {lS99),Xo.5,pp. 43S-441). — In this article, which is a preliminary communication, 

 the author reviews the literature of nitrogenous constituents of fungi, and briefly 

 reports a study of the nitrogenous material extracted from Boletus edulis and 

 Agarictts campestris. 



Is ferric chlorid volatilized when evaporated from acid solutions? L. L. 

 De Koninck {Pud. Assoc. Beige Chim., 13 (1S99), Xo. 1, pp. .7-/(9).— The author, after 

 reviewing the work of Presenilis and Vogel, concludes as the results of his own 

 labors that " under the ordinary conditions of analysis, the quantity of iron lost in 

 this way may he neglected." — H. snyder. 



A critical review of the methods of analysis of fats, A. Lemoixe {Bui. Assoc. 

 Beige Chim., 13 {1899), Xo. 1, pp. 20-39). — A table is given showing the "saponifica- 

 tion index" (Koettstorfer number) and the percentage of carboxyl and oxycarhoxyl 

 of fatty bodies. The author contends that it is more scientific to adopt, in place 

 of "potash number," the terms, carboxyl for actual acidity, and oxycarhoxyl for 

 "latent" acidity of the fatty body. — h. sxyi>er. 



The identification and reaction of saccharose, dextrose, levulose, and mal- 

 tose, A Gawalowski {Pharm. Post, 1898, p. 3S0). 



The chemical and bacteriological analysis of drinking waters, F. Baucher 

 and G. Dojimerque {Traite pratique d'anahjse chimique et microbienne des eaux d' ali- 

 mentation. Paris: Imprimerie Levee, 1S9S; rev. in Jour. Hyg., 23 {189S), Xo. 1157, p. 

 564). 



Methods for the bacteriological examination of water, W. Hesse and Niedxkr 

 {Ztschr. Hyg., 29 {1898), p. 454 ; abs. in Chem. Ztg., 23 {1S99), Xo. 12, Bepert., p. 35). 



On the determination of the value of waxes, A. Heupei. {Ztschr. Angeiv. Chem., 

 1899, No. 8, pp. 171, 172). 



Temperature correction tables for picnometer measurements, P. Fuchs 

 {Ztschr. Angeiv. Chem., 1899, Xo. 2, pp. 25-27). 



New laboratory apparatus {Ztschr. Angeiv. Chem., 1899, Xo. 8, pp. 173-175, figs. 

 6). — Describes (1) an apparatus for the volumetric determination of hydrogen, 

 rnethan, and nitrogen in gas mixtures by fractional combustion with copper oxid, 

 (2) a safety sand bath, (3) an apparatus for the quick determination of the specific 

 gravity of gums, and (4) a universal holder. 



An aerometer with temperature correction scale, P. FuCHS {Ztschr. Angeiv. 

 Chem., 1899, Xo. l,pp. 15, 16, jig. 1). 



A new automatic pipette with reservoir, H. Gockel {Ztschr. Angeiv. Chem., 1S99, 

 No. 1, p. 10, Jig. 1). 



BOTANY. 



Grass culture in Iceland, P. Teilberg {Ber. Andra Nord. Landtbr. 

 Ko?igr., Stockholm, 1897, I, pp. 310-312; II, App. 8, pp. 27).— This 

 article gives a description of the topography, meteorological conditions, 

 soils, vegetation, and agricultural resources of Iceland, together with 

 agricultural statistics and an enumeration of the most important 

 grasses and other meadow plants. The pasture grasses of Iceland 



