APPENDIX. xxix 



The value of the grass at the time the seed is 

 ripe, is to that of the grass at the time of flowering, 

 as 6 to 18. 



The loss which is sustained by leaving the crop 

 of this grass till the seed be ripe is very great. That 

 it loses more of its weight in drying at this stage of 

 growth, than at the time of flowering, perfectly agrees 

 with the deficiency of nutritive matter in the seed crop, 

 in proportion to that in the flowering crop: the straws 

 being succulent in the former, they constitute the 

 greatest part of the weight; but in the latter they are 

 comparatively withered and dry, consequently the 

 leaves constitute the greatest part of the weight. It 

 may be observed here, that there is a great difference 

 between straws or leaves that have been dried after 

 they were cut in a succulent state, and those which 

 are dried (if I may so exprees it) by nature while 

 growing. The former retain all their nutritive powers; 

 but the latter, if completely dry, very little, if any. 



XXVIII. Lolmm perenne. Engl. Bot. 315. F10; 

 Dan. 747. Perennial rye-grass. Nat. of 

 Britain. 



At the time of flowering, the produce from a rich 

 brown loam, is 



oz. or Ibs. per acre 

 Grass, 11 oz. 8 dr. The produce per acre 125235 7827 3 



80 dr. of grass weigh when dry 34 dr. 



The produce of the space, ditto 78 4-10 * 



The weight lost by the produce of one acre in drying 449414 3 



64 dr? of grass afford of nutritive matter 2.2 dr. 



The produce of the space, ditto 7.0 3-4 5 4 * 



At the time the seed is ripe, the produce is 



Grass, 22 oz. The produce per acre 239580 14973 12 



