Circular 23 - Reference Index 
87 
Vegetation (or vege- 
table matter) 
fermented as breed- 
ing source of 
stable flies 
8-31; 17-2,3. 
sprays to control 
mosquitoes. • .7-22. 
wood ticks 
12-18; 21-54. 
treatment to control 
stable flies 
8-31; 17-7,8,9. 
Vermin 
legionary ants as 
removers 15-3* 
Vines 
removal for tiok 
control 12-16. 
Visitors 
distributors of bed- 
bugs 10-2. 
Walls (basement) 
ants that breed in 
15-5. 
coal tar pitch to 
fill cracks.. 21 -19. 
construction to pre- 
vent termites 
2-21; 2A-5. 
use of termite 
shields. . . .2-25,26. 
Warehouses 
creosote oil for 
control of fleas 
and tioks. .. .21-22. 
fumigation 
absorption of 
fumigants by 
stored commodities 
22-23. 
calcium cyanide 
22-34. 
choice of fumigant 
22-22. 
chloropicrin 
22-12,37. 
hydrocyanic acid 
discoids. . . .22-31- 
hydrocyanic acid 
gas most efficient 
22-15,23. 
instructions 22-20. 
methyl bromide 
21-50; 22-37. 
precautions. .22-22. 
quickest method of 
controlling insect 
pesos. •*.... o/Cfc— j) • 
sodium cyanide and 
dilute sulfuric 
acid 22-26. 
sodium cyanide 
dosage 22-28. 
temperature ; time ; 
method ; dosage 
22-21. 
Pharaoh ant a pest of 
15-5. 
prevention of termites 
concrete platforms 
or ground slabs 
2-21. 
treatment to control 
tropical rat mite 
15-19. 
ventilation after 
fumigation. . . .22-36. 
Water 
fresh 
pyrethrum-oil 
emulsion for mos- 
quito control 
7-19. 
