-193- 
264. — — — SIEvERS, A. F., and ABBOTT, T. r . S. . « ' '. • 
1919. Derris as an insecticide. Jour. Agr. Res. 17: 177-200. 
265.' McTAVISH, 'if. C. 
1938. Mothproofing problems. Soap 14 (l): 103-105, 123; also 
Exterminator's Log 6 (6): 12-14. 
266. "MAINE AGRICULTURAL EXPERIMENT STATION 
1935. [Derris.] Maine Agr. Expt. St. Bui. 380: 139-258, illus. 
267. MALENOTTI, E. 
• 1937. Dure tappe nella lotta control il "Verme" del pesco.' 
Coltivatore e Gior. Vinic. Ital. 83 (21): 424-426. 
268. MANSCHKE, R. ( 
1937. Schadlingsbekampfung mit v/asserigen Derrispulver-Losungen. 
Obst. u. Gemusebau 83 (4): 54. 
269. MARSHALL, J. 
1934. Recent developments in orchard spray practices. Quebec Soc. 
Protect. Plants. Ann. Rpts. (1932-34) 25 and 26: 125-134. 
270. MASSACHUSETTS AGRICULTURAL EXPERIMENT STATION 
1937. [Derris] Mass. Agr. Expt. Sta. Ann. Rpt. (1936) Bui. 339: 
36-40, 46-61. 
271. — ;- 
1938. t Derris] Mass. Agr. Expt. Sta. Ann. Rpt. (1937) Bui. 347, 
99 pp. 
272 v 
1939. [Derris] Mass. Agr. Expt. Sta. Bui. 355: 40, 60, 63. 
273. MERINO, G., and OTANES, F. Q. 
1938. Control of insects and other pests. Philippine Jour. Agr, 
8 (4): 437-461, illus. 
274. MICHELBACHER, A. E., and ESSIG, E. 0,. 
1938, Caterpillars attacking tomatoes. Calif. Agr. Expt, Sta. 
Bui. 625, 42 pp., illus. 
275. MICHIGAN AGRICULTURAL EXPERIMENT STATION 
1934. [Derris.] Mich. Agr. Expt. Sta. Rpt. 1932-34: 30. 
276. MILES, H. W. 
1926. Life history and control of the pea moth, Laspeyresia 
nigricana (Steph.) Bui. Chamber Hort, 3 (l): 6-9. 
[.Abstract in Rev. Appl. Snt. (A) 14: 217-218.] 
277. 
1931. On the garden pebble moth, Pionea forficalis L. Northwest, 
Nat. 6 (4): 200-207. 
