TABLE 2.--A Summary of the minimum toxic and maximum non-toxic doses of insecticides 
administered orally to livestock at Kerrville, Tex. 
cere ee ae, 
Chemical toxic dose 
dose found 
tested 
CHLORINATED HYDROCARBONS 
Mo. /kg Mg. /kg 
Aldrin Calves 1-2 weeks Doe 5.0 
Cattle adult 10 72D) 
Shee adult 10 1 
Benzene hexachloride Calves 1-2 weeks ge) 5 
as the gamma isomer Cattle adult 10 25 
Sheep adult 10 25 
Chlordane Calves 1-2 weeks 10 25 | 
Cattle adult i> --- 
Sheep adult 25 50 | 
DDT Calves 1-2 weeks 100 250 
Sheep adult 250 500 
TDE Calves 1-2 weeks 100 250 
Sheep adult 1000 --- 
Methoxychlor Calves 1-2 weeks 250 500 
Sheep adult 1000 --- 
Dieldrin Calves 1-2 weeks 3) 10 
Cattle adult 10 25 
Sheep adult 10 25 
Pigs 3 weeks 25 50 
Horses adult --- 25 
Heptachlor Calves 1-2 weeks 15 25 
Sheep adult 25 50 
Heptachlor Epoxide Calves 1-2 weeks AO 2a, 
Toxaphene Calves 1-2 weeks 2202) 5 
Cattle adult 10 25 
Sheep adult 10 25 
Goats adult --- 50 
ORGANIC PHOSPHORUS COMPOUNDS 
Bayer L 13/59 Calves 1-2 weeks 5 10 
(Dipterex) Cattle adult 50 1 
Sheep adult 200 --- 
140 
