504 EXPERIMENT STATION RECORD. 



A uevr gravimetric method for determining glucose, F. Gand {Compt. Rend., 

 lift {ISnt), yo. 10,p.47S': ahs. in Chcm. /A<j., IS { IS94), .\o. 78, i:cinn.,p.2-i4). 



On the determination of glucose by akaline copper solutions, F. Gand {('ompt. 

 Ji'ciiiL, 119 {IS'Jl), Xo. 10. pp. G50-ar,2). 



Influence of the volume of the precipitates thro^vn do-wn by lead acetate as 

 ■well as by soda and Glauber's salts on the results of the sugar titrations before 

 and after inversion, A. J)(»i:xrKA(;Eii (Zlnchr. (iiii/ew. Chcm., 1804, No. 19, pp. ,583-591). 



Concerning the modification of the reducing povrer of invert sugar solutions 

 by evaporating or allow^ing to stand w^ith lead acetate, A. Borntkager {Zt-schr. 

 (nificw. Clum., 1894. Xo. 19, pp. .579-.'.82). 



Methods for the examination of food stuffs, etc., G. Rupp {Die Untersuchunfj von 

 Xdhrnniinmitlihi, doiiissmitfchi, idkI Oihrauchsueijenntanilen. Heidelberg : Carl ll'inter'8 

 ('nir(rsit(its I!i(rhlia)idhtn//, Ji;/. ll-'i). 



Contributions to the analysis of lard, G. Halphen {Jour. Pliurm. et Chim., 30 

 {1894), pp. 241-.: 47; aba. in Jnali/st, 19 {1894), Dec, p. 283). 



A digester Tvith regulator and automatic feeder for determinations requir- 

 ing a lov7 temperature, J. vax den Bergue {Rev. Ayron. Loiivain, 1894, Xo. 3, pp. 

 214-219, pi. 1). 



Improvements in analytical balances, L. S. de Konixck {Cliem. Ztg., IS {1894), 

 Xo.95,p. 18(i7). 



An apparatus for furnishing both hot and cold sterilized water {Chem. Ztg., 18 

 {1S94), Xo. 9.5, p. 1869, fig. 1). 



Constant level and temperature -water bath, J. van dex Berghe and M. Cos- 

 TEi.EiN {Lah. Agr. Prov. Roulers, West Flanders, lipt. 1893, pp. 19-22, figs. 4). 



Hydrogen sulphid generator, H. G. Schauche {Jour. Amer. Chem. Soc, 16 {1894), 

 No. 12, p. 868, fig. 1). — A form of apparatus is described aud illustrated which is claimed 

 to ''furuish an absolutely uuiforui supply of gas." 



Modification of Knorr's extraction apparatus, O. Carr {Jour. Amer. Chem. Soc, 

 16 {1894), Xo. 12, pp. 868, 869, fig. 1). — A cork fitted over the neck of the receiving 

 flask is substituted for the mercury seal of Kuorr's apiiaratus (.see I". S. Dept. Agr., 

 Uiv.Chem. Bul.28, p.97). 



Laboratory devices, E. Waller {Jour. Amer. Chem. Soc, 16 {1894), No. 12, pp. 

 869-873, figs. 2). — The burette filling device, condenser, and revolving Nessler tube 

 rack and Nessler comparator used in the laboratory of CH. Shultz, of Nevr York, 

 are described. 



New laboratory apparatus {Chem. Ztg., 18 {1894), No. 95, p. 1868, figs. ,?).— Illus- 

 trated description of a laboratory vacuum, the lower half of which is of porcelain, 

 aud a small hot-air uu)tor for running stirring apparatus, etc. 



The new chemical institute of the University of Halle. R. Schenck {Chem. Ztg., 

 18 {189 1), No. 94, pp. /6'^<S'-i,s'.7,'?).— Description aud i)laus of the buildiug, desks, cases, 

 etc., aud description of the heating, ventilation, plumbing, gas fitting, electrical 

 apparatus, aud other details of equipment. 



BOTANY. 



Concerning the number of species of tubercle bacteria of Legu- 

 minosae, F. NoinsE, L. IIiltner, aud E. Sckmid {Landw. Vers. Stat., 45 

 (icsyj), Xo. 1 and 2, pp. 1-27, Ji(/. 1; ahs. in Chem. CenthJ., 1S94, II, Xo. 

 J(l, pp. 705-707). — The authors have sought to determine whether there 

 is more than a single species of tubercle bacteria among the Leguminosce. 

 Previous e xperiments^ conducted by them with pure cultures of bac. 



' Landw. Vers. Stat., 39 (1891), pp. 327-359; E. S. R., 3, p. 336. 



