Dec. 1,1925 
The Use of Vacuum for Insect Control 
1041 
obscuruSj and Trogoderma tarsale were the most resistant of the 
larval forms used, 3 days 7 exposure killing only 66, 60, and 20 per 
cent, respectively; and 7 days’ exposure killing 95, 80, and 30 per 
cent, respectively. 
LITERATURE CITED 
(1) Back, E. A., and Cotton, R. T. 
[1925]. COMMON PESTS DESTRUCTIVE TO HOUSEHOLD GOODS IN STORAGE. 
Proc. Amer. Warehousemen’s Assoc. (1924) 34: 185-188, illus. 
(2) Boyle, R. 
1670. NEW PNEUMATICAL EXPERIMENTS ABOUT RESPIRATION. Phil. Trans. 
Roy. Soc., London 5 (62): 2011-2031; (63): 2035-2056. 
(3) Cole, F. J. 
1906. the bionomics of grain weevils. Jour. Econ. Biol. (1905/06) 
1: 63-71. 
(4) Guericke, O. von 
1672. EXPERIMENT A NOVA (UT VOCANTUR) MAGDEBURGICA DE VACUO 
spatio. 244 p., illus. Amstelodami. 
(5) Jousset de Bellesme, [G. L. M. F.] 
1881. REMARQUES SUR LA RESPIRATION DES INSECTES. ASSOC. Frang. 
Avanc. Sci. Compt. Rend. (1880) 9: 710-712. 
(6) Mackie, D. B. 
1917. A SUMMARY OF THE WORK OF THE PEST CONTROL SECTION FOR THE 
year 1916. Philippine Agr. Rev. 10: 128-145, illus. 
(7) Nagel, W. 
1921. BEKAMPFUNG VON ANOBIUM STRIATUM OLIV. MITTELS CYANWASSER- 
stoffgasen. Ztschr. Angew. Ent. 7: 340-348. 
76649—26f-4 
