STUDIES OF POISONOUS RANGE PLANTS IN THE 

 UNIVERSITY OF NEVADA 



In undertaking the study of poisonous range plants, the Nevada 

 Agricultural Experiment Station has planned a series of experiments 

 to obtain information upon the following points : ( 1 ) the part of the 

 plant which is poisonous, (2) the time of the year when it is dangerous, 

 (3) the kinds of live stock poisoned, (4) the amount which must be 

 eaten in order to cause illness or death, (5) the symptoms shown by 

 the poisoned animals, (6) the conditions under which poisoning occurs, 

 (7) methods of cure and treatment, (8) and methods of preventing 

 poisoning. 



In addition, studies are made of the post-mortem conditions shown 

 by the poisoned animal, and of the chemical nature of the poisonous 

 element found in the plant. 



The basis of all these experiments consists of long series of feeding 

 tests in which plants are brought fresh from the ranges to the Univer- 

 sity and are fed to range animals in pens where they are kept under 

 close observation. 



This bulletin is a report of the results obtained by feeding the plant 

 known as death camas to range sheep and cattle. 



S. B. DOTEN, 

 Director, Nevada Agricultural Experiment Station. 



UNIVERSITY OF NEVADA, 



Reno, Nevada, January, 1921. 



48130, 



