60 PASTURE AND RANGE. 
is found in the lower parts of the mountains and some- 
times poisons stock, though it is so thinly scattered that 
losses are comparatively rare. Its chief 
Symptoms and  offact is on the heart and blood vessels, but 
Conditions of + 4t 
Poisoning there are also characteristic secondary 
effects. The pulse becomes very weak. 
Bloating is common and nausea and retching are present 
in all cases. There is apparently a considerable feeling 
of constriction in the throat, giving rise to repeated at- 
tempts at swallowing. The pupils are dilated. Horses 
sweat profusely and become so weak as to be unabie to 
stand. Death is usually caused by asphyxia. The-poison- 
ous character of other species is a matter of history. 
The European form, Aconitum Napellus L., is the source 
of the drug aconite, and an Indian species Aconitum ferox 
Wall., is used by natives of the Himalayas as an arrow 
poison. 
Concerning the treatment for aconite poisoning in per- 
sons, Chesnut, in 1898, wrote as follows: “No specific 
antidote is recognized, but physicians have 
used atropin or digitalis and nitrate of amyl 
with good effects. The ordinary emetics and stimulants 
must be given. Artificial respiration should be con- 
tinued for a couple of hours if necessary, and a recum- 
bent position must be maintained through the treat- 
ment.” 
Tannic acid is recommended by Gail and Hahner as a 
chemical antidote. All agree that the use of heart and 
respiratory stimulants is an important part of the treat- 
ment. 
Treatment 
