CHEMISTRY. 907 



of Paris green, anrl 14 of water. Notes aro given on the results of an examination of 

 heailchecse considered as causing several cases of illness. 



Report of the chemist, G. W. Shaw {Oregon Sla. Rpt. 1899, pp. 20-27). — Analyses 

 are given of a number of samples of leachings from alkali soils. The alkali was gen- 

 erally of the black kind and was concentrated in the first 6 in. of the soil. Analyses 

 are also given of 7 samples of gypsum, 4 of limestone, 3 of Paris green, 3 of soil, and 

 1 each of mixed hay, barley, salsify, laurel green, and crematory ashes. 



Chemical division, H. J. Wheeler {Rhode Island Sta. Rpd. 1900, pp. 219-292). — 

 A report of the work of the year in the chemical division in the following lines: Fer- 

 tilizer and feeding stuffs inspection, methods of analysis, special chemical investiga- 

 tions, pot experiments, improvement of laboratory facilities, correspondence and 

 ]nil:)lications, and miscellaneous analytical work. Under the last head are reported 

 analyses of muck, air-slaked lime, ashes, calcium carbid waste, salt, sodium carbon- 

 ate, muriate of potash, potassium carbonate, sulphate of potash, potassium nitrate, 

 acid phosphate, dissolved boneblack, floats, tankage, fine-ground bone, nitrate of soda, 

 sulphate of ammonia, dried blood, wool waste, rice meal, wheat bran, cotton-seed 

 meal, corn meal, oats, cracked corn, linseed meal, boiled blood and bone, and three 

 poultry feed mixtures (with narrow, medium, and wide nutritive ratios). 



Detection of the adulteration of bone superphosphate, H. Lasne {Rev. 

 Phys. Chim., 4 {1900), p. 397; ahs. in Chem. Ztg., 24 {1900), Nos. 28, ReperL, p. 99; 

 78, ReperL, p. 282). — This is a description of the analytical methods employed by 

 the author which have already been noted (E. S. R., 11, p. 104). 



The theory and practice of the analysis of drinking waters, G. Kabrhel 

 (Tlieorie und Praxis der Trinkwasserbeurteilung. Munich: Oldenbourg, 1900, pp.VII-\- 

 234). 



Permanent standards for use in the analysis of water, D. D. Jackson ( Tech. 

 Quart., 13 {1900), Xo. 4, pp. 314-326, Jigs. 4)- — This article describes the permanent 

 standards already in use for the determination of color, turbidity, and nitrates, and 

 discusses new standards jiroposed for the determination of ammonia, nitrite, and 

 iron. For the determination of free and albuminoid ammonia and iron the author 

 proposes the use of jilatinum-cobalt scjlutions; for nitrites, cobalt-copper solutions. 



Preliminary experiments on the determination in cultivated soil of assim- 

 ilable phosphoric acid, A. de Sigmoxd {Ann. Sci. Agron., 1900, II, No. 3, pp. 431- 

 463). — In these experiments a compari>«on was made between the indications fur- 

 nished by Schloessing's method of digesting in dilute nitric acid (E. S. R., 11, p. 131) 

 and the results of pot experiments with phosphates on different soils. As a rule the 

 soils showing a considerable percentage of phosphoric acid soluble in dilute nitric 

 acid (in general 0.075 per cent) were not benefited by phosphatic fertilizers, although 

 it was not always true that soils containing less than 0.075 per cent of phosphoric acid 

 soluble in the nitric acid were in need of such fertilizers. 



A simple and quick method for determining- humus acid, H. Bokntkagee 

 {Ztschr. Analgt. Chem., 39 {1900), No. 12, pp. 790, 791). — The method proposed is in 

 general a modification of Messon's method for the examination of cochineal.' 



On the analysis of peat, H. Borntha<;er {Ztschr. Analyt. Chem., 39 {1900), No. 

 11, pp. 694-698 ). — Brief directions are given for the determination of water, waxy 

 substances, nitrogen, humus acids, and ash. 



Determination of starch in potatoes, G. Baumert and H. Bode {Ztschr. Angeu;. 

 Chem., 1900, pp. 1074, 1111; abs. in Analyst, 26 {1901), No. 298, p. 20).— In the method 

 proposed the cellulose is first removed by digestion in an autoclave and filtering. 

 The starch is then sejiarated from nitrogenous and other substances by precipitation 

 with alcohol in alkaline solution, dried and weighed. The loss of weight on ignition 

 gives the amount of starch. 



iFarben Ztg., 1900, p. 238. 



