ZYGADENUS, OR DEATH CAMAS. 



31 



TABLE II. Nonfatal cases of poisoning of sheep by Zygadenus venenosus atGreycliff, 

 Mont., in 1912, 1913, and 1914 Continued. 



Table III summarizes the fatal cases in the three seasons. 



TABLE III. Fatal cases of poisoning of sheep by Zygadenus venenosus at Greycliff, 

 Mont., 1912, 1913, and 1914. 



As these feedings were carried on during the season as long as the 

 plants could be obtained and as it was practically impossible to have 

 any considerable number of cases at one time, it is evident that the 

 number of cases under any given set of conditions must have been 

 small. As a matter of fact, none of the cases of 1912 were strictly 

 comparable with those of 1913. Consequently, the actual averages 

 of dosage were based on a comparatively small number of cases. 



In 1914, there was a much larger number of cases, and some stages 

 of the plant were fed upon which no experiments were made in the 

 preceding years. Even in this year, however, there were only a few 

 cases in which the experiments were under identical conditions. 



