SECTION II 

 Plants Dangerous in Pasture or on the Range 



The plants in this division are more numerous than 

 those of the preceding, in spite of the facts to which at- 

 tention was directed. (See p. 17) . Several circumstances 

 are to be considered in this connection. Some poisonous 

 plants thrive in early spring and are shrivelled and gone 

 before the time for cutting hay arrives. Others lose much 

 of their poisonous character with maturity, and some 

 contain volatile poison which evaporates and is lost dur- 

 ing the curing of the hay. In addition to these there are 

 numerous poisonous plants which are never cut with hay 

 but are often found in pasture and eaten by animals with 

 fatal results. 



GRASS FAMILY Gramineae. 



THE SORGHUMS Andropogon spp. 



The Sorghums are important forage plants and are 

 wholesome under most conditions. In certain cases, how- 

 ever, they develop hydrocyanic or prussic 

 Examples and add a mogt deadl poison Literature on 



Conditions of ,, , . 



Poisoning e sub .l ec t records many cases of sudden 



and violent deaths. One example given by 

 Glover and Robbins will serve for illustration: "At 

 Brighton, Colorado, thirty-two cows, after being kept in 

 the corral over night, were turned into a field of Kaffir 

 Corn of not over two acres. . . . Twenty-one of them 

 were dead in half an hour, and four of the others were 

 badly affected." 



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