Circular 23 - B*f«renc« In<Ux 
u 9 
Rubberized tarpaulins 
(see Tarpaulins) 
Sal soda (see Washing 
soda) 
Sand fleas 
infestations. . .13-5* 
Sand flies 
adult and larva 
(illus. )8-28. 
biology 8-29. 
breeding places 
8-28. 
control 8-29. 
effect on man and 
livestock 8-25. 
eggs and pupa 
(illus. )8-29. 
other names. .• .8-2?. 
repellents 
oil-pyTethrum ex- 
tract 8-30; 21-66. 
sassafras oil 
21-68. 
spearmint oil 
8-30; 21-72. 
Sanitation 
aid to control 
food insects. .4-4. 
meat insects . . 5-7. 
powder-post bee- 
tles 6-10. 
roaches 11-7. 
Sarcoptes scabiei canis 
Gerl. 
causes sarcoptic mange 
of dogs 19-16. 
control 19-17. 
habits and life his- 
tory 19-16. 
Sarcoptes scabiei (Deg. ) 
oauses sarcoptic mange 
of horses 19-6 . 
control on man 
15-21. 
description; habits 
• ••••»..»JLP— tLX. y i7"U t 
n itch w or w scab n mite 
of man 15-21. 
references 15-22. 
Sar copte s scabiei equi 
H/GerTT] ^~ 
carries "cavalryman's 
itch" 19-7. 
Sarcoptic mites (see 
Sarcoptes scabiei 
(Deg.) )S. scab.iei canis 
Gerl. , 3. scabiti' equi 
(Gerl. ) 
control of mange 
caused by 19-8. 
Sassafras oil 
characteristics; cost; 
manufacturers and 
distributors. .21-68. 
sand fly repellent 
21-6C. 
Saw-toothed grain 
beetle 
food insect. .... .4-1. 
Scab mite (also see 
abiei (Deg. )) 
carbolic acid for 
control 21-12. 
Scolopendra heros Gir. 
1)ite.. 15-29. 
