xvi. APPENDIX. 



The proportional value by which the grass at the 

 time of flowering exceeds that at the time the seed is 

 ripe, is as 6 to 1 2. 



The proportional difference in the value of the 

 flowering and seed crops of this grass is directly the 

 reverse of that of the preceding species, and affords 

 another strong proof of the value of the straws in 

 grass which is intended for hay. The straws at the 

 time of flowering are of a very succulent nature ; but 

 from that period till the seed be perfected, they gradu- 

 ally become dry and wiry. Nor does the root leaves 

 sensibly increase in number or in size, but a total 

 suspension of increase appears in every part of the 

 plant, the roots and seed vessels excepted. The straws 

 of the Poa trivlalls are, on the contrary, at the time 

 of flowering, weak and tender; but as they advance 

 towards the period of ripening the seed, they become 

 firm and succulent; after that period, however, they 

 rapidly dry up and appear little better than a mere dead 

 substance. 



XIII. Festuca glabra. Wither. B. 2. P. 154. 

 Smooth fescue grass. Nat. of Scotland. 



At the time of flowering, the produce from a clayey 



loam, with manure, is oz. or Ibs. per acre 



Grass, 21 oz. The produce per acre 228690 014293 



80 dr. of grass weju when dry 32 dr. } 



The produce of the space, ditto 134. 1 2-16 2-5 5 91476 



The weight lost by the produce of one acre in drying 8576 14 



64 dr. of grass afford of nutritive matter 2 dr. 7 



The produce of the space, ditto 10.2 dr. V 



At the time the seed is ripe the produce is 



Grass, 14 oz. The produce per acre 152460 952812 



80 dr. of grass weigh when dry 32 dr. "> 



The produce of the space, ditto 89.2 2-5 } 60984 ~~ 3 



