Circular 23 - Reference Index 
57 
Termites (Cont'd) 
materials used in 
prevention or con- 
trol (Cont'd) 
soil poisons 
2-34,39. 
naturally resistant 
wood 2-22. 
pressure- treated 
wood 2-22,^0. 
moisture essential 
2-11; 2A-2. 
paradichlorobenzene 
not recommended 
21-58. 
prevention of infes- 
tation 2-7. 
avoid contact with 
soil... 2-8; 2A-3. 
clearance 
2-8,11; 2A-3. 
concrete platforms 
or ground slabs 
2-21. 
construction prac- 
tices 2-7; 2A 
-3; (illus.) 2-9. 
exterior woodwork 
2-18. 
importance .... 2-2 . 
isolation 
2-13; 2A-4. 
removal of debris 
2-7,8; 2A-3. 
sound construction 
2-24. 
water pipes, etc. 
2-21. 
wood in basements 
2-19. 
ventilation 
2-11; 2A-4. 
references 2-42 . 
shelter tubes 
(illus. )2-5,31. 
Termite tubes (see 
Shelter tubes) 
Thallium sulfate 
caution. .15-9; 21-79. 
characteristics 
21-78. 
cost; uses; manu- 
facturers and dis- 
tributors 21-79. 
use in poisoned ant 
baits 15-8,9; 21-78. 
Theobaldia mosquitoes 
egg rafts 
7-9, (illus.) 7-6. 
habits 7-9. 
known as n pest mos- 
quitoes" 7-9. 
Throat bot fly ( Gastro - 
philus nasalis (L) ) 
adult 16-2. 
distribution in U. S. 
16-6. 
egg-laying habit3 
16-3. 
eggs 
...16-3, (illus. J16-4. 
how injury is produced 
16-6. 
larvae 
16-5, (illus. )l6-5,6. 
protective devices 
, 16-9. 
life history and sea- 
sonal activity 16-7. 
Ticks 
avoidance of 
attack and infection 
12-11. 
disease infection 
from bites 12- 
11,12,13,14,15,16. 
