42 



large tubs full of water, close to which the cattle passed on the way 

 to the maadows. At about nine a. m. forty-six cows and heifers 

 drank of this solution of the nitrate. ... At three p. m. the forty- 

 six cows and heifers I'eturned to the farm. At four p. m. a heifer 

 died suddenly and at five p. m. another heifer succumbed." 



Although the death of only two heifers occurred, many of the other 

 cattle that drank of the soda solution showed marked symptoms of 

 its effects. The death of these two is accounted for by the writer 

 from the fact that they were the first ones to leave the stable, con- 

 sequently had more time to drink at the tubs than did any of the 

 other animals which followed. 



