- 135 - 
87, 
88. 
89. 
K). 
COLORADO AGRICULTURAL EXPERIMENT STATION 
1936. [Rotenone.] ' Colo. Agr. Expt. Sta. Ann. Rept. 49: 24-25. 
91. 
92. 
93. 
94. 
95. 
1937. [Rotenone.] Colo. Agr. Expt. Sta. Ann. Rept. 50 
(1936-1937): 28. 
CONSUMERS 1 RESEARCH, INC. . . .J - '■" . 
1937. Gardening. VI. Insecticides and fungicides. Consumers' 
Res. Bull. 3 (9): 13-20. ... - . 
COOPER, F. L. 
1936. Letter to Dr. R. C. Roark dated September 15, 1936, . 
including photographs of f Lonchocarpus nicou and Derris 
elliptica . ■ y 
CORTES, S. 
1898. Flora de Colombia. Ed. 2, 312 pp. , illus. Bogota. 
CORY, E. N. 
1935. A partial report of the section of extension of the 
American Association of Economic Entomologists Meeting 
in Pittsburgh, Pennsylvania, on December 27, 1934 — 
Informal discussion of field results with arsenical 
substitutes in the control of vegetable insects. 
U. S. Dept. Agr.,. Bur. Er.t. and Plant Quarantine. 
19 pp. , mimeo. . • 
COX, A. J. . . 
1935. Economic poisons 1934-1935. Calif. Dept. Agr. Spec. 
Publ. no. 138, 54, pp. Sacramento. 
1936. Circular letter to manufacturers of economic poisons, 
containing rotenone, January 30, 1936. 2. pp. 
CRANE, D. B. 
1933. Some studies on the use of rotenone as a cpnine 
insecticide. Rept. N. Y. State Vet. Col. at Cornell 
Univ. (1931-1932) 18: 86-120. Albany. 
96. 
97. 
98. 
1933. Rotenone — a new parasiticide. Cornell Vet. 23: 15-31. 
CRESSMAN, A. W. . : 
1938. The comparative efficiency against California red scale 
of applications of petroleum oil, oil and nicotine, and oj 
and timbo extract. Spec. Rept. Jan. 17. 13 pp. 
CREVaUX, J. 
1883. Voyages dans l'Ameri.que du Su'd. 635 pp., illus. Paris. 
