THE AGRICULTURAL GRASSES OF THE UNITED STATES. 131 



anioimt of digestible carbo-bydrates. In the grasses of both countries 

 the fiber increases with regularity as the nitrogenous constitutents 

 decrease, and of the latter the non-albuminoid portion is relatively 

 greatly the poorer the quality of the grass. 



CHANCfES IN COMPOSITION DURING GROWTH. 



In addition to the single analysis previously tabuhited, analyses 

 have been made of series illustrating the changes in composition of 

 several species from the appearance of the blade to the maturity of the 

 seed. 



The grasses examined comprise: 



I. Jgrostis vulgaris. (Red toi).) 

 A series from richer soil. 

 A series from poorer soil. 

 II. Phleum praiense. (Timothy.) 

 A series from richer soil. 

 A series from poorer soil. 



A series of first year's growth from seed sown in garden soil. 

 A series from La Fayette, Ind. 

 A series from Hanover, N. H., the two latter from rather poor soil. 



III. Dactylis, glomerata. (Orchard grass.) 



A series from the first growth. 

 A series from later growth. 



IV. Alopecurus prateuxxs. (Meadow fox-tail.) 



A series from good sod. 

 y. Poa praiensis. (Bhie grass, Meadow grass.) 

 A series from good soil. 

 A series from poorer soil. 

 A series from the wayside. 

 A series from Quincy, 111. 



VI. Poa compressa. (Wire grass.) 



A series from poor soil. 



VII. Bronius unioloides. (Schrader's grass.) 



A series from rich garden soil. 



VIII. Bromus erectus. (Broom grass.) 

 A series from poor soil. 



IX. Eolcus lanatus. (Satin grass.) 



A series from poor soil. 



X. Arrheuathenim avenaceum. 



A series from medium soil. 



XI. Setaria glauca. 



A series from medium soil. 



XII. Anthoxanthitm odoratum. (Sweet vernal grass.) 



A series from medium soil. 



XIII. Fesiuca ovina. (Sheep's fescue.) 



A series from poor soil, grpwing in hunches. 



XIV. Lolium lialicnm. (Italian Rye grass.) 

 A series from low moist soil. 



A series of first year's growth from the seed in garden soil. 

 X-V. Loliiun perenne. (Rye grass darnel.) 

 A series from medium soil. 



