-202- 
377. and SCALES, A. L. 
1937. Toxicity of a number of insecticides to three cotton in- 
sects. Jour. Econ. Ent. 30: 864-869, 
378. SONAN, J. 
1927. Studies on the insect pests of the tea plant. II. Formosa 
Govt. Res. Inst. Dept, Agr. Rpt. 29, 132 pp. [in 
Japanese. Abstract in P.ev. Appl. Ent. (A) 16: 482-483.] 
379. 
1937. The grey-streaked moth, Prodenia litura Fab., in Formosa. 
Formosa Govt. Res. Inst. Dept. Agr. Rpt, 70, 69 pp., 
illus. [in Japanese. Abstract in P.ev. Appl. Ent. (A) 
26: 207.] 
380. SOUTH CAROLINA. EXPERIMENT STATION 
1932. Control of corn ear worn in sweet corn. S. C. Agr. Expt. 
Sta. Ann. Rpt. 45: 68. 
381. 
1935. [Derris.] S. C. Agr. Expt. Sta. Ann. Rpt. 48: 47, 53-54, 150. 
382. SOUTHERN RHODESIA DEPARTMENT OF AGRICULTURE 
1929. Report of chief entomologist for 1928. Rhodesia, South., 
Dept. Agr. Rpt. Sec. 1938: 39-46. 
383. SPEYER, E. R., READ, W. , and ORCHARD, 0. 
1940. Control of vegetable pests. [Cheshunt] Expt. and Res. Sta. 
Ann. Rpt. (1939) 25: 40. 
384. SPOON, 17. 
1935. Bestrijding van de karwijmot door Btuiven met derrisponder. 
Amsterdam Kolon. Inst., Afd. Handel smuseum. Bor. 94j 
Indische Mercuur 58 (13): 181-182, illus., and Bergcul- 
tures 9 (12): 261-263. 
385. and LAAN, P. A. van der 
1935. De beteekenis van het rotenongehalte bij de beoordeeli- 
van derrisv/ortel . .Amsterdam Kolon. Inst. Afd. S- 
museum. Bor. 98; Indische Mercuur 58 (41): 625-627; and 
Bergultures 9 (41): 1018-1023. 
386. LAAN, P. A. van der, SMULDERS, C. M, L., and DIAKONOPP, A. 
1937. Net verschil in werkzaamheid van derris en lonchocarpusv/ortol 
en do ondersohoiding van hun ivortolpoodors. Indisohe 
Mercuur 60 (18): 259-261; (19): 275-277; also Amst< rA 
Kolon. Inst. Afd. Handel smusoum. Bor. 110, 26 ; . , A } 
