GRASSES OF IOWA. 



387 



CHEMICAL COMPOSITION. 



The following analyses show the chemical composition of 

 Anch'opog on nutans as analyzed in the laboratory of the experi- 

 ment station: 



Sample 1. Collected May 21, 1896, 23 to 24 inches high. 



Sample 2. Collected June 5, 1896, 24 to 26 inches high. 



Sample 3. Collected June 17, 18.-16, no description. 



Sample 4. Collected June 29, 1896, 36 to 37 inches high. 



Sample 5. Collected July 13, 1896, 40 to 42 inches high. 



NATURAL CONDITION. 



O -.J 



h >^ 



939 



12 47 

 11.64 

 16.11 



13 77 



Sample 1 

 Sample 2 

 Sample 3 

 Sample 4 

 Sample 5 



WATER FREE SUBSTANCE. 



Sample 1. 

 Sample 2. 

 Sample 3. 

 Sample 4., 

 Sample 5 



41.74 

 43 41 

 48 06 

 44.07 

 39.04 



The water content of the samples analyzed shows that the 

 amount of water decreases as the plant matures. There is, 

 however, an exception to this in the \hird sample. In the dry 

 matter the fat content is irregular and the same condition exists 

 in the relation of the amount of protein and albuminoids. In 

 the amount of crude liber, there is, however, a cont ant increase. 

 The nitrogen free extract and ash are also irregular in the 

 amounts present in the grass. 



The following analysis is given from the S. D. Agrl. Coll. 

 Bull. No. 40, p. 30: 



AIR DRY SUBSTANCE. 



Sample., 



org 



45 7M 



