Circular 23 - Reference Index 
11 
Cheese mites (see Ham 
mites ) 
Cheese skipper (see 
Ham skipper 
Chicken mite ( Derman - 
yssus gallinae Peg. ) 
control ; effect ; 
habits ..19-13* 
Chiggers ( Sutrombicula 
alfreddugesl (Qua. ) ) 
alleviation of bites 
or itching 
oarbolated petro- 
latum 14-8. 
collodion 
., 14-8; 21-21. 
menthol 
14-8; 21-48. 
petrolatum (vase- 
line) 21-61. 
sulfur dusting of 
infested areas 
14-9; 21-74. 
appear an oe and 
stages 14-4. 
clothing as pro- 
tection. ..... .14-?. 
control 14-7. 
oil-pyrethrum ex- 
tract spray 
21-66. 
sulfur dusting of 
infested areas 
14-9; 21-74. 
diagnosis and 
lesions 14-6 . 
distribution in U.S. 
...14-2. 
do not burrow into 
the skin 14-5. 
effects on man.. 14-2. 
elimination from 
grounds 14-8 . 
hosts .14-3. 
kerosene as repellent 
and killing agent 
21-42. 
life history and 
methods of attack 
14-4. 
other names 14-2. 
place of attack 14-5. 
prevention of attack 
on man 14-7. 
sulfur dusting 
14-7; 21-74. 
reference to litera- 
ture 14-9 • 
removal from man 
14-8. 
seasonal occurrence 
14-3. 
Chigoe flea ( Tunga 
penetrans (L. ) ) 
control. • •••••• .13-4. 
effects 13-4. 
life history.... 13-5. 
not identical with 
"ohigger" 13-4. 
Chloroform 
availability; ohar- 
aoteristics; price 
21-18. 
oontrol of bees and 
wasps 15-14* 
precautions. . • .21-18. 
treatment of screw- 
worms in humans 
18-9; 21-17. 
