GRASSES OF IOWA. 



351 



Sample 1. 

 Sample 2. 

 Sample 3. 

 to head out. 

 Sample 4. 

 Sample 5. 



Collected April 24, 1896, 3 to 10 inches high. 



Collected May 4, 1896, 12 to 18 inches high, no heads. • 



Collected May 11, 1896, 18 to 24 inches high, just beginning 



Collected May 20, 1896. 



Collected June 1, 1896, 30 to 32 inches high. 



NATURAL CONDITION. 



Sample 1. 

 Sample 2. 

 Sample 3. 

 Sample 4 

 Sample 5. 



o 



be 2 



h ^ 



4.23 

 4.45 

 9.50 

 7.16 

 1167 



WATER FREE SUBSTANCE. 



Sample 1. 

 Sample 2 

 Sample 3. 

 Sample 4 

 Sample 5 



28.26 

 34 75 

 46.01 

 36 83 

 40.83 



Considering the fiv3 analyses of Bromus hordeaceus we find that 

 the water content in the samples in their natural condition 

 vari s from 71.41 per cent to 87.29 per cent, and the amount of 

 water varies irregularly in the samples Iq the dry matter or 

 water free substance, we find that the fat varies from 9 46 per 

 cent to 2.95 per cent, decreasing as the grass becomes older. 

 The crude protein varies from 28.05 per cent 1o 12.30 per cent, 

 and with one exception the amount decreases as the plant 

 grows older. The amount of albuminoids, however, varies 

 from 21.61 per cent to 10.76 per cent, and these decrease in 

 amount regularly as the grasses increase in growth. The 

 crude fiber varies from 26.54 per cent to 35.01 per cent, and is 

 irregular in the amount present and tends to increase as the 

 plant increases inage. The nitrogen free extract, howtver, 

 is very irregular in the amount present. The ash, on the con- 

 trary, tends to decrease with the age of the grass. 



One other sample is ad led f jr. 'comparison with the results 

 of the laboratory : 



