xxiv v APPENDIX. 



At the time the seed is ripe, the produce is 



Grass, 14 oz. The produce per acre 152460 9528 12 



30 dr. of grass weigh when dry 32 dr. } 



The produce of the space, ditto 89.2 2-5 $ 6( 



The weight lost by the produce of one acre in drying 5717 4 



64 dr. of eras s atJbrd of nutritive matter 5. 1 dr. 



1 12506 7 701 6 



f. Id!'.) 



j.H.2 5 



The produce of the space, ditto 18. 



The weight of nutritive matter which is lost by leaving 1 the 

 crop till the seed be ripe, exceeding one third part of its 

 value - 649 4 



In the early growth of the leaves of this species 

 of Pea, there is a striking proof that early flowering 

 in grasses is not always connected with the most abun- 

 dant early produce of leaves. In this respect all the 

 species which have already come under examination, 

 are greatly inferior to that now spoken of. Before the 

 middle of April the leaves attain to the length of more 

 than twelve inches, and are soft and succulent; in 

 May, however, when the flower-stalks make their ap- 

 pearance, it is subject to the disease termed rust, 

 which affects the whole plant; the consequence of 

 which is manifest in the great deficiency of produce 

 in the crop at the time the seed is ripe, being one-half 

 less than at the time of the flowering of the grass. 

 Though this disease begins in the straws, the leaves 

 suffer most from its effects, being at the time the seed 

 is ripe completely dried up; the straws therefore, 

 constitute the principal part of the crop for mowing, 

 and they contain more nutritive matter in proportion 

 than the leaves. This grass is evidently most valua- 

 ble for permanent pasture, for which, in consequence 

 of its superior, rapid, and early growth, and the disease 

 beginning at the straws, nature seems to have de- 

 signed it, The grasses which approach nearest to this 



