- 32 - 
with DDT on the "basis of persistence, 1-percent and 5-percent powders of 
the two materials were about equal - perhaps chlordane was slightly more 
effective. In washing tests, garments impregnated with DDT were more re- 
sistant to loss of effectiveness than were those treated with chlordane. — 
Knipling (264). 
When applied to cloth and evaluated by the beaker test method, 
technical chlordane was effective at a concentration of 0.0005 percent. 
Lice exposed on cloths impregnated with 1 percent of insecticide were 
paralyzed within 3 hours by chlordane. Chlordane was about as long- 
lasting as DDT. Sleeves of cotton underwear cloth impregnated with 2 per- 
cent of the insecticides were compared for resistance to laundering. 
Toxaphene, which was the most effective treatment, remained lethal to lice 
after four 15-rainute boilings in a 1-percent soap solution. DDT lasted 
almost as long and was superior to chlordane. — Eddy and Bushland ( 126) . 
A single dose of chlordane was administered orally to rabbits at a 
dosage of 300 mg./kg. When undiluted chlordane in a gelatin capsule was 
fed to the animal, the mortality of lice feeding on the rabbit was l6 
percent after 4 days. When administered as a 10 percent solution in 
corn oil (5 rag. /kg.) through a stomach tube, the mortality of lice was 
60 percent after 2 days, but the rabbit died after 4 days. One rabbit 
receiving 300 mg. chlordane per kg. in corn oil died within 2 hours; 
another receiving 25 mg./kg. died within 3 hours. — Knipling .ai Sl» ( 266 ) 
Mallophaga - Menoponidae 
Eomenacanthus stramineus (Nitz.), the chicken body louse 
Menopon gallinae (L.), the shaft louse 
Mallophaga - Phil opt eridae 
G-oniocotes hologaster Eitz., the fluff louse 
Dusts containing 2 or 5 percent of chlordane, applied at rates 
from 2 to 10 pounds per 100 square feet of soil, gave excellent results 
and were somewhat superior to the 3-percent DDT dust. The birds remained 
free of lice for 4 to 5 weeks. — Creighton e_t al. ( 57 ) . 
One application of 5-p©rcent chlordane dust to the birds was less 
efficient than sodium fluoride, but gave satisfactory control up to 70 
day 8 after treatment. Pens treated with 2-percent and 5-percent chlordane 
sprinkled over the litter at the rate of 2 pounds per 100 square feet were 
still free from lice 70 days after treatment. — Edgar ( 130) : Edgar e_t al. 
(131). 
In laboratory tests in Kentucky excellent control of body, shaft, 
and fluff lice was obtained with one application of 5-percent chlordane 
powder on the bird. — Ky. Agr. Expt. Sta. ( 2^3 ). 
