GRASSES OF IOWA. 



173 



■cattle are affected in a similar way to horses, and that the curi- 

 'Ous properties which so effect animals are contained in the 

 blades. Quite a number of our horses have been ill this spring 

 after having eaten it. It usually takes them about a week to 

 recover, during which time they are unfit for work, and espec- 

 ially so during the first tbree days. ' 



Fig. 74 A. One of the grasses referred to as sleepy grass Stipa viridula. ( A.fter F. 

 Lamson-Scrlbner Div. of Agrost. U. S. Dept. of Agrl ) 



"Captain Kingsbury, of the Sixth United States cavalry, 

 under date of March, 1890, wrote me from Fort Stanton that 

 the sleepy grass affected nearly all his horses at two campiag 

 places. It was hard work to make them walk. 



"The similari y of symptoms, whether ob erved in Coahuila 

 or in New Mexico, is certainly remarkable, and furnishes strong 

 evidence of the substantial accuracy of the observations as 



