POISONOUS AND INJURIOUS WEEDS 



109 



purging or death to the animals fed thereon. Under some con- 

 ditions prussic acid is developed by the plant and this would 



FIG. 32. AUTUMN CROCUS 

 (Colchicum autumttale). 



FIG. 33. PURGING FLAX (Linum catharticum). 



be quite sufficient to cause the results recorded ; therefore 

 it is wiser to regard with suspicion pastures or meadows con- 

 taining this flax. 



Ragwort (Senecio jacob&a). The harmful nature of this 



