CHEMISTRY. 



503 



West Fhoidrrs, Rpi. 1Sf)S, pp. iV-^.>).— In view of tlie dim'rence of 

 opinion as to the accuiacy of tliivS nicthod the anthor undertook com- 

 liarisons of it with the ordinary method on samples of cliemical fertili- 

 zers, irrigation water, wood ashes, and oil cakes containing percentages 

 of potash ranging fi'oin (>.;">9 to 21.85, with the following results: 



Percentages of potash hi/ the ordinary and lAndo-Gladding methods. 



Ordinary 

 method*. 



Lindo- 

 Gladding 

 method. 



Difference. 



Chemicals 



Do 



Do 



Do 



Irrigation water (results cahiilated to f^iMiiis per ciiliic meter) 



Colza cake ((iuzerath) 



Cocoa oil cake 



Wood ashes 



Per cent. 

 4.86 

 21.85 

 5.25 

 .59 

 13.12 

 1.35 

 1.73 

 9.02 



Per cent. 



4.88 



21.80 



5.22 



.59 



13.03 



].:i4 



1.83 



8.97 



Per cent. 

 + 0.02 



— .05 



— .03 



— .09 



— .01 

 + .10 



— .05 



Analyses of butter, F, Seileb and R. HEUSS(ASW<<re/?. ^yocllemGhr. 

 Chem. PJiarni., 32 {1894), pp. 280-291 ; ahs. in. Chem. ZU/., 18 {1894), No. 

 70, Repert.,p.213). — In a large number of samples of butter of undoubted 

 purity tlie volatile fatty acids by the Reichert-Meissl method were found 

 to vary from 2G.18 to 32.78, never falling below 20; wliere the distilla- 

 tion was with steam the acids were never below 30, confirming what 

 bas long been claimed — that by ordinary distillation a part of the acids 

 remained in the residue in the tlask. The parallel results by this 

 method of distilling agreed closely. In the samples mentioned the 

 water content ranged from 11.24 to ir),G4 per cent, the fat from 82.93 

 to 88.2.5, and the ash from O.OOl to 0.1(»7 per cent. 



On the determination of lime in soil, G. Basile and E. de Cii.lis {Ktaz. Sper. 

 A(jr. Hal., ..'7 (IS94), Xo. 2, pp. lir,-lo7). 



Triammoninm phosphate and the qualitative determination of magnesium, P. 

 .SciroTTl.ANDF.it (Ztschr. (morgan. Chem., 7 {lSf)4), No. ■'>, pp. f>4S, 344). 



On the chemical composition of the efilorescence on brick walls and on the 

 nitrates which it contains, O. Helm {Schrifien Naturf. Ges. Danzig, S {1S94), 

 No. o and 4, pp. 708-179). — Numerous analyses are reported showing this sulistance 

 to consist essentially of variable amounts of ealoium carbonate; sulphate of soda, 

 magnesium, or lime; salt; nitrates of lime or alkalies; and insoluble matter. 

 Investigations are reported which indicate that the nitr.ates are formed from the 

 ammonia of the air by microorganisms, as is the case in soils. 



On ash-free albumen, Iv. Biii.ow (Pjtiiger's Arch. Physiol., .'iS, Xo. 5 and G. pp. 

 207~:'.'21). — l>etaiis of its ]ireparation, properties, et<\ 



The chemistry of carbohydrates and their importance to physiology, E. 

 Fisc'i'EU {Die Chemie der h'ohlenhydrafe nnd ihre Hedeutiing flir dir J'hysiologie. P>erHn: 

 A. Hirschirald, 1S04). — A lecture. 



On melitriose and its quantitative determination, A. Bai {Chem. Ztg., IS {1894), 

 Xo. 92, pp. 1794-1799). 



On the determination of mannite in "wines, .T. A. Mtlleu {BkI. Soc Chim. Paris, 

 11-12 {1S94), Xo. 22, pp. 107S-1080). 



Studies on the oxidation of alcohol by Fehling's solution, F. Gand {Compt. 

 Rend., 119 {1894), Xo. 20, pp. 862, 803). 



