- 68 - 
11. BRITTAIII, \U H. 
1921. Experiments in the control of the caljhage maggot 
( Chortophil a "b rassic ae Eouche) in 1920. ITova Scotia 
Ent. Soc. Proc.- (19201 6: 54-73. 
12. 
1022. Pu.rthcr experiments in the control of the cablaage maggot 
( Chortophila "bras sicao Eouche) in 1921. Acadian Ent. 
Soc. Proc. (I92l)~^7r'49-71. 
13. 
1925. Some miscellaneous insecticide tests, Acadian Ent, 
Soc. Proc. (1924) 10: 23-42. 
14. BUSSY, L. P. de 
1922. Proevcn net stoffcn, die aantrcWrend, afstootcnd of 
schadolijlc v;crkcn op do rupscn van Prodcnia litura 
PlD. Bijdr. Dicrloindc (Poost-Nurator) 21-22: 337-342. 
Leiden. 
15. CAESAR, L. 
1927. Insects attacking vegetables. Ontario Dcpt. Agr. Bull. 
325, 65 pp. 
16. CALIPORinA AGRIGULTUHAL EXPERIMENT STATION 
1923. InPccticidal value of derris. Calif. Agr. Expt . Sta. 
Ann. Rcpt. 1922-23: 132, 
17. CARLOS, A. S. 
1926. Lorris and its uses as an insecticide. Fertilizer, 
Feeding-Stuffs and Earm Supplies Jour. 11: 161. 
18. CASTILLO, IT. 
1926. Preliminary studies on the insecticidal properties of 
throe ^x^ecies of derris in the Philippines. 
Philippine Agr. 15: 257-275. 
19. CORBETT, G. H. , and YUSOPE, M. 
1924. Scotinophara coarctata, P. (the "black bug of Padi) . 
Malayan Agr. Jour. 12: 91-106, illus. 
20. DAVIDSON, \J. M. 
1924. Results of experiments with miscellaneous substances 
against the chicken mite. U. S. Dept. Agr. Dept. 
Bull. 1228, 10 pp. 
