ARSENICALS. 57 
(44) SCHOENE, W. J. 
Zinc arsenite as an insecticide. N. Y. Agr. Exp. Sta. Tech. Bui. 28 (1913), 
p. 15. 
(45) Scott, E. W., and Siegler, E. H. 
Miscellaneous insecticide investigations. U. S. Dept. Agr. Bui. 278 (1915), 
p. 47. 
(46) Scott, W. M. 
Arsenate of lime or calcium arsenate. In J. Econ. Entomol. (1915), 8: 194- 
199. 
(47) Smith, C. R. 
The determination of arsenic. U. S. Dept. Agr., Bur. Chem. Circ. 102 (1912), 
12 p.* 
(48) Smith, J. B. 
Arsenate of lime. In Rept. Entomol. Dept., N. J. Agr. Exp. Sta. for 1907, 
p. 476. 
(49) SOLLMANN, TORALD. 
A manual of pharmacology. 1 ed., 901 pp. Philadelphia-London (1917). 
(50) Tartar, H. V., and Wilson, H. F. 
The toxic values of the arsenates of lead. In J. Econ. Entomol. (1915), 
8: 481-i86. 
(51) Wilson, H. F. 
Combination sprays and recent insecticide investigations. 'In Proc. Entomol. 
Soc. British Columbia, no. 3, n. s. (1913), p. 9-16. 
( 52 ) 
Insecticide investigations of 1914, and Bien. Crop Pest and Hort. Report for 
1913 and 1914, Oregon Agr. Expt. Sta., p. 137. 
(53) 
Common insecticides: Their practical value. Wis. Agr. Exp. Sta., Bui. 
305 (1919), p. 15. 
