357 
affords, will be found superior to those given by the 
F. ovina , if they are brought into comparison. 
Engl. Bot. 1006. 
XX. Bromus diandrus . Curt. Lond. 
Nat. of Britain. 
At the time the grass is ripe flower, the produce from a 
rich brown loam is 
oz. or lbs. per acre. 
Grass, SO oz. The produce per acre - - 326700 0 = 20418 12 . O 
80 dr. of grass weigh when dry - 34dr.\ n 
The produce of the space, ditto - 204 J 138847 8 = 8677 15 0 
The weight lost by the produce of one acre in drying - 11 740 13 0 
64 dr. of grass afford of nutritive matter 3 dr. ? _ Q(?( _ 0 , 
The produce of the space, ditto - 22.2 £ — 
This species, like the preceding, is strictly annual ; the 
above is therefore the produce for one year, which, if com- 
pared with that of the least productive of the perennial 
grasses, will be found inferior, and it must consequently be 
regarded as unworthy of culture. 
XXI. Poa angustifolia. With. 2. P. 1 42. 
Narrow-leaved meadow-grass. Nat. of Britain. 
At the time of flowering, the produce from a brown 
loam, is 
Grass, 27 oz. The produce per acre - - 294030 0 = 18376 14 0 
80 dr. of gras, weigh when dry - 34 dr ? ^ _ v810 2 12 
The produce of the space, ditto - 183.2§ ^ 
The weight lost by the produce of one acre in drying - - 10566 1 1 4 
64 dr. of grass afford of nutritive matter 5 dr. 1 1430 6 11 
The produce of the space, ditto * 33.3 J 
At the time the seed is ripe, the produce is 
Grass, 14 oz. The produce per acre - - 152460 0 = 
80 dr. of grass weigh when dry - 32 dr. ? finQ o 4 n _ 
The produce of the space, ditto - 89. 2§ S 
The weight lost by the produce of one acre in drying 
64 dr. of grass afford of nutritive matter 5. 1 dr. \ 
The produce of the space, ditto 18.1i j ^ 
The weight of nutritive matter which is lost by leaving the crop 
till the seed be ripe, exceeding one-third part of its value 
In the early growth of the leaves of this species of Poa, 
there is a striking proof that early flowering in grasses is 
not always connected with the most abundant early pro- 
duce 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 
A A 3 
9528 12 
3811 8 
5717 4 
701 6 
- 649 0 4 
