52 
Circular 23 - Reference Index 
Sodium cyanide (Cont'd) 
manufacturers and 
distributors 
21-40; 22-52. 
use to generate hy- 
drocyanic acid gas 
21-38; 22-26. 
Sodium fluoride 
characteristics ; 
general uses 21-71. 
cost; availability; 
caution 21-72. 
use to control or 
repel 
ants 15-7. 
coclcroaches 
11-8; 21-71. 
horse lice. . .19-5. 
Soft bodied ticks 
( Ornitnodoros ) 
avoidance of bites 
12-13,15. 
distribution. .12-16. 
habits; usual loca- 
tions 12-5. 
transmit relapsing 
fever 12-2,15. 
Soil Doisons 
containing coal tar 
creosote 21-23. 
termite control 
manufacturers and 
distributors 
2-39. 
use 2-34. 
Soldiers 
caste of termites 
2-2. 
Solenopsis spp. (see 
Fire ants) 
Spearhead 
use in mosquito con- 
trol., (illus. ),7-15. 
Spearmint oil 
characteristics; price; 
manufacturers and 
distributors. .21-72. 
sandfly repellent 
8-30; 21-72. 
Spiders 15-23. 
black widow. .. .15-23. 
house 15-24. 
references 15-26. 
tarantulas 15-25. 
Spinose ear tick ( Orni - 
tnodoros megnini 
(Dupes ) ) 
control in animals' 
ears. . . . . . . . . . 1 <c— c. } • 
distribution. . . .12-5. 
habits; development 
12-23. 
injurious effect on 
man and animals 
12-3,23. 
removal from ears of 
man 12-23. 
Spirits of camphor (see 
Camphor ) 
Spirobolus marginatus 
Say 
annoying millipede 
15-31. 
