Circular 23 - Reference Index 
Bedbugs 
adult 10-1. 
control 10-3. 
fumigation. . .10-4. 
individual beds 
kerosene. . . .21-42. 
oil -pyre thrum ex- 
tract 
10-5; 21-66. 
pyre thrum dust 
21-66. 
sprays 10-5* 
superheating. 10-5. 
egg shells 10-3. 
excretal specks 
(illus.) 10-4. 
feeding habits. 10-2. 
means of distribution 
10-2. 
normal development 
10-2. 
reference to litera- 
ture 10-6. 
Bed nets 
preparation and 
use 7-21. 
Bee nests 
control. . .15-14$ 15. 
location. .15-12, 13. 
Bees 
classes 15-12. 
control 15-14. 
social kinds . .15-13 • 
solitary kinds 
15-12. 
Bellows (or knapsack) 
duster 
description and 
uses b # 20-35« 
manufacturers * and 
distributors . 20-36 . 
Benzene (also called 
Benzol ) 
larvicide for Human 
bot fly. 8-20; 21-9. 
caution in handling 
21-9; 18-11. 
characteristics 
21-9. 
control of bees and 
wasps 15-14. 
in screwworm Formula 
No. 62... 18-10, 11. 
source 21-9. 
treatment for screw- 
worm 
..8-19; 18-9; 21-9. 
Benzoate of soda 
use in poisoned ant 
baits 15-9. 
Benzol (see Benzene) 
Benzyl benzoate 
control of itch or 
scab mite. .. .15-21. 
"Berne" 
tropical American 
name for human bot 
fly 8-20. 
Biohloride of mercury 
(corrosive sublimate) 
caution in use. 15-7. 
use in ant traps 
15-7. 
Bird mites 
pests of pigeons and 
livestock. . . .19-13. 
Biting ants 
irritating effects 
15-3. 
speoies 15-3. 
