CHEMISTRY. 861 



Phenolplitlialeiu is colored by alkaline bicarbouates in dilute water 

 solutions. The color is weakened by carbon dioxid and (lisajtpears com- 

 pletely in the presence of large quantities. The indicator is therefore 

 useless for the accurate titration of alkali solutions which contain 

 carbonates. — F. w. mokse. 



Recovery of waste platinum chlorid, H. W. Wilky {-Jour. Ainer. 

 CItem. ISoc, 1!) {1897), X<>. 3, pp. ;J5S-:J(J1). — Waste platinum from i)otash 

 determinations is collected and to the hot water solution of the potas- 

 sium-platinum chlorid is added aluminum in the form of clii)pin<;s or 

 turnings. Reduction soon goes on vigorously. It is advisable to add a 

 little hydrochloric acid to promote the settling of the reduced platinum. 

 When reduction is complete, the excess of aluminum is dissolved in 

 hydrochloric acid. The spongy platinum is then filtered and washed 

 by decantation, and next treated with strong nitric acid because alumi- 

 num often contains a little copper. After filtering- and washing free of 

 acid, the platinum is dissolved in aqua regia and the platinum chlorid 

 prepared by the usual evaporation and purification from nitric acid. — 



F. W. MORSE. 



Coucerning properties belonging to the alcohol-soluble proteid of wheat 

 and of certain other cereal grains, G. L. Teli.eii iAmcr. Cltnii. .lour., 10 (IS!)7), 

 No. 1, pp. 59-69). — This paper gives in more detail a part of the investigation on the 

 quantitative separation of the proteiils of wheat, noticed above (p. 854). 



A new method for the determination of the specific gravity of liquids, R. 

 Zaloziecki (Ztschr. angew. ('hem., 1896, No. IS, pp. .^02-556, fuj. 1). 



Estimation of boric acid in foods, L. de Koningu {Jour. Amer. Chein. Soc, 19 

 {1S97), No. l,pp. 55, 56). 



Volumetric estimation of phosphoric acid, B. W. Kilgoijk and ('. H. Williams 

 {North Carolina Sta. Ept. lS95,pp. 259-JSO). — A reprint of Bulletin 119 of the station 

 (E. S. R., 7, pp.741, 742). 



Method for the determination of carbonic acid by means of iodin, .1. K. 

 PnEi.ps (Ztachr. anorgan. Chcm., 12 (lS9i',), Xo. 6, pp. JS1-J.:5). 



The determination of casein in human milk, G. Mekcikk {Ri'pert. Pharm., 1S97, 

 p. 49; ahs. in Chem. Zig., 21 (lS97),No. 17, Hepert., p. 15). — A discussion of tlie method. 



The determination of solid fats in compound lards, G. F. Texnii.i^k {■four. 

 Amer. ('hem. Soc, 19 {1897), No. 1, pp. 51-54). — The autlior .shows tlie unrelialdlity of 

 the mechanical process for eeparating solid and lit^uid fats described by J. 11. Wain- 

 wright.' — F. w. MORSK. 



On the determination of stearic acid in fats, O. Ueh.ner and C. A. Mitchell* 

 {Jonr. Amer. Chem. Soc, 19 {1897), No. 1, pp. .12-51, fuj. /).~Thc method descri'bed is 

 the same as that given bj^ the authors in a previous paper. - 



A modification of Stutzer's process of determining albuminoid nitrogen in 

 starchy substances, IT. Tkyllek {/irrirers' .four., .'1 (1897), No. 0, ji. .'6").—\ trans- 

 lation of this article fi(HU Chemiker Zcitung (.sec above). 



The use of the ebullioscope and the influence upon the alcohol determination 

 of solids in solution, V. Fiii;YEK {Zlachr. angew. Chcm., 189G, No. 21, pp. 654-659). 



A new automatic pipette, C. Sanoek {Chem. Ztg., 21 {1897), No. 4, pp. 24, 25, 

 figx. 2). — This consists of a globe, terminating in a narrow neck above and in a 

 stopper-like arrangement below. The latter lits into a movable gla.ss cap having an 

 inlet tube on one side and an outlet on the opposite side. The stopper has an open- 



'Jour.Amer. Chem. Soc, 18 (1896), Xo. .% p. 259 (E. S. K., 7, p. 619). 

 * Analyst, 21 (1896), p. 316 (E. S. R., 8, p. 666). 



