Colorado Explrimlnt Station 
56 
medicine. Indian Hemp is perhaps the best known. It is used as an 
emetic, cathartic and diuretic. It contains the glucoside apocynein 
and a bitter extractive apocynin. Both dogbane and Indian hemp are 
looked upon with suspicion by stockmen, and they no doubt poison 
animals occasionally. 
MILKWEED (Asclepias) 
The milkweeds, as a group, are quite well-known. All of them 
are regarded with suspicion by stockmen, and in some cases at least, 
this suspicion is justified. All plants with a milky juice are not ‘"milk¬ 
weeds”, that is, of the group known botanically as “Asclepias.” For 
