Uo 
Circular 23 - Reference Index 
Nicotine sulfate 
caution 12-18; 21-55. 
characteristics ; 
trade name; general 
uses* ••••■•• • <ci— j£+» 
cost; manufacturers 
and distributors 
21-55. 
use to control 
clover mite 15-21. 
feather mite 
19-H. 
ticks 
12-18; 21-54. 
No-see-ums (see Sand 
flies) 
Nose fly ( Gastrophilus 
haemorrhoidalis L. ) 
adult 
l6-2,(illus.)3. 
control 16-9. 
distribution in U.S. 
16-6. 
egg 16-4. 
egg-laying habits 
16-3. 
injury 16-6. 
larva 
.. .16-4, (illus.)5,6. 
life history. . .16-7. 
protective devioes 
16-9. 
Nosopsyllus fasciatus 
(Bosc. )(see European 
rat flea) 
Nozzles(spray) . .20-26. 
Nozzle Y (spray) 
description; uses 
20-31. 
Nun moth 
venomous cater- 
pillars 15-15. 
Nygmia phaeorrhoea 
(Donov. ) (see Brown 
tail moth) 
Oil 
ant repellent. . .15-7. 
mosquito larvicides 
7-18. 
Oil of citronella 
characteristics ; 
source; storage; 
cost; availability 
..21-55. 
mosquito repellent 
7-22; 21-55. 
Olive oil 
general uses; cost; 
availability.. 21-56. 
use to Control 
ear mange on dogs 
19-19. 
head lice 
. . . . . . . • 7™7 } fci — yO. 
Onchocerca worm 
effect on man... 8-24. 
transmitters of 8-24. 
Organization 
mosquito control 
7-11. 
Oriental rat flea 
( Xenopsylla oheopsis 
(Roths; Ti — 
in tropical America 
13-4. 
in the U.S 13-2. 
