CHEMISTRY. 285 



tbat of phenyl, the hydrazones beino- prepared in the usual manner. 

 Methyl-phenyl hydrazin serves to isolate galactose, and glucose maybe 

 separated from fructose by benzyl- and paphthyl-hydraziii. Allyl- 

 phenyl-hydrazin forms a liydrazone with melibiose, which is insoluble 

 in water and is decomposed by benzaldehyde into a crystalline sugar, 

 probably pure melibiose. The hydrazones are characterized by ditier- 

 enees in solubility and specific rotatory power. — w. h. krug. 



The estimation of sugar by the copper method, Kalman ( Oesterr. 

 ZtscJir. Znckerind. und Landic, 25 {189(i), p. 43). — The cuprous oxid 

 is collected ou ignited asbestus in a glass tube and washed with hot 

 ■water. The asbestus plug is then washed into 50 cc. of a solution 

 consisting- of 100 gm. ferric sulphate, 100 cc. concentrated sulphuric 

 acid, and 900 cc. of water. The amount of reduced ferric salt is titrated 

 with twentieth-normal potassium permanganate solution, and the result 

 calculated in terms of copper, as follows: 56 gm. Fe = 63 gm. oxalic 

 acid = 63.3 gm. Cu. — w. h. keug. 



Dimethylene-gluconic acid, Henneberg and Tollexs (Liehig's Ann. Phi/s. tmd 

 Chem., 29:i {1S9G), Xo. 1, p. ol). 



Monomethylene-saccharic acid, Hexneberg and Tollexs {LiebUfs Ann. Phys, 

 und Chem., J03 {ISfifi), Xo. 1, p. 40). 



A new pentonic acid and pentose, E. Fischer and O. Bromberg {Ber. dent. chem. 

 Ges., 29 (ISM), Xo. ■'>, p. oSl). 



On the formation of sodium carbonate in nature, H. Taxatar (Ber. dent. chem. 

 Ges., S9 (ISOG), Xo. 7, p. 1034; ahs. in Bui. Soc. Chim. Paris, scr. 3, 15-16 (1S96). 

 No. U,p. 12S0). 



Gums and resins exuded by Queensland plants, chemically and technolog- 

 ically examined, J. Latterkr (Queensland Bepf. Aijr. liul. 13, 3d scr.. pp. 33-70). 



The decomposition of mono-saccharids by alkalies, F. Framm (Pfluger's Arch. 

 Physiol, 04 (1S9<;), Xo. 10-13, pp. 575-399). 



The action of alkali on the phenylosazones of di- and polysaccharids, C. J. 

 Lixtxer (Chem. Ztg., 30 (1890), Xo. 79, p. 7 33 ) .—Whan an atiueoiis solution of the 

 phenylosazones of <li- and polysaccharids is boiled with alkali it becomes turbid and 

 crystals of glyoxalosazone are deposited. GIncosazone is not decomposed. — w. H. 

 KRIG. 



The oil of the egg, P. Paeadixo and D. Toso (Gior. di Pharm. di Chem.: ahs. in 

 Jour. Pharm. et Chim., 1S96, pp. 247-249; and Analyst, 21 (1896), June, p. 101). —An 

 examination of the oil from the jolk of the egg, which is used in ointments. 



Characteristic reaction of some little-known oils, G. de Xegri and G. Fabris 

 {Pharm. Post, 1S90, Xo. 17, p. 117; abs. in Viertcljahr. Chem. Xahr. und Genussmtl., 11 

 {1896'), Xo. 2, pp. 184, 185). — These include Sabadilla, Kai)ok, and Hatiputa oils, 

 Oleum Celosio', Oleum Lauri indic(f, Illipe fat, and also cottou-seed oil. 



On the relation w^hich exists betw^een the chemical composition of organic 

 compounds and their oxidizability under the influence of laccase, G. Bertraxi> 

 (Bui. Soc. Chim. Paris, ser. 3, 15-10 (1S90), Xo. 12, pp. 791-703). 



Concerning the hydrolosis of melezitose by soluble ferments, E. Bourquelot 

 and H. Hkrissey (.lour. I'harm. ci ('him., ser. 0, 4 (1890), Xo. 0, pp. 385-387). 



The behavior of protein compounds to^vard aldehyde, E. Beckmaxx (Forsch. 

 a. Lchensmtl. und Hyg. Chem., 3 (1890), Xo. Ki, pp. 324-329). — The article is a con- 

 densation of two inaugural dissertations. A large number of preparations were 

 investigated to test the method of determining gelatin or albumen in the presence 

 of peptone, by meaus of "forinoi" (40 per cent solution of formic aldehyde). 



