-188- 
(560) SPEYER, W. 
1941. Zur Bekampfung des GartenlaubkRfers (Phyllopertha 
horticola L.) Nachrichtenbl. f. den Deut. 
Pflanz ens chut zdienst 21:72-73, [Abstract in Rev. 
Appl. Ent. (A) 31:52.] 
(561) SPOON, W. 
1940, Stuiven en spuiten met derris tegen de vlasthrips. 
Arosterdaisi Kolon. Inst,, Afd. Hendelsmuseum. Ber. 
150, 10 pp. 
(562) 
1940* Stuiven en spuiten met derris tegen de vlasthrips. 
Tijdschr. over Plantenzienkten 46: [157] -162, 
(563) STANILAND, L. N., and BEAUMONT, A. 
1938* Department of plant pathology. Seale-Hayne Agr. 
Col. Pam. 48, 48 pp. 
(564) STEARNS, L. A. 
1942. Experimental spraying for control of second-brood cod- 
ling moth. Peninsula Hort. Soc. [Del.] Trans. 31: 
40-45. 
(565) STEINER, H. M. 
1942. Apple sprays— Dormant through petal-fall. Pa. State 
Hort. Assoc. News. 19:93-95, 97. 
(566) and WORTHLEY, H. N. 
1941. The plum curculio problem on peach in Pennsylvania. 
Jour. Econ. Ent. 34:249-255* 
(567) and WuRTHLEY, H. N. 
1941. The pistol case-bearer and its control in Pennsylvania 
orchards. Pa. Agr. Expt. Sta. Bui. 406, 26 pp. 
(568) STKLLWAAG^ F. 
it 
1939. Oelemulsion zur Abtotung der Winterpuppen des bekreuzten 
n 
Traubenwicklers. Anz. f. Schadlingsk. 15:97-105. 
(569) STEWART, M. A. 
1942. Ox warble, Hypoderroa lineata (de Villers), control in 
range cattle. (Abstract) Jour. Boon. Ent. 35:956. 
(570) STEWART, W. L. 
1941. The sheep tick. A survey of conditions in the four 
northern countries of England. Roy. Agr. Soc. 
England Jour. 101:57-62. 
