349 
the whole crop is sustained if it is not cut till that period : 
the straws are then dry, and the root-leaves in a sickly 
decaying state ; those of the latter-math, on the contrary, 
are luxuriant and healthy. This species sends forth 
flower-stalks but once in a season; and these being the 
most valuable part of the plant for the purpose of hay, it 
will, from this circumstance, and the superior value of the 
grass of the latter-math, compared to that of the seed-crop, 
appear well adapted for permanent pasture. 
IX. Poa cceritlea . — Var. Poa pratensis. Engl. Bot. 1004. 
Poa subcserulea. Short blueish meadow-grass. 
Nat. of Britain. H. Kew. 1 — 155. Poa humilis. 
At the time of flowering, the produce from a soil of the 
like nature as the preceding is 
Grass, 1 1 oz. The produce per acre 
64 dr. of grass afford of nutritive matter 2 dr. 1 
The produce of the space, ditto - 5.2 J 
80 dr. of grass weigh when dry 24 1 
The produce of the space ditto - 52.3f g / 
or lbs. per acre. 
119790 
0 = 
7486 
14 
0 
3743 
7 = 
233 
15 
0 
35937 
0 = 
2246 
1 
0 
^ n g 
- 
5240 
13 
0 
If the produce of this variety be compared with that of 
the preceding one, it will be found less ; nor does it seem 
to possess any superior excellence. The superior nutritive 
power does not make up for the deficiency of produce by 
80 lbs. of nutritive matter per acre. 
X. Festuca hordiformis . Poa hordiformis. H. Cant. 
Barley-like fescue grass. Nat. of Hungary. 
At the time of flowering, the produce from a sandy soil, 
with manure, is 
Grass, 20 oz. The produce per acre - 217800 
80 dr. of grass weigh when dry - 24 dr. 1 . 
The produce of the space, ditto 96 J 
The weight lost by the produce of one acre in drying 
64 dr. of grass afford of nutritive matter 2. 1 dr. 4 7 _ _ 7 
The produce of the space, ditto . 11.1 J 
0 = 13612 8 O 
0 = 4083 12 O 
9528 12 0 
O = 478 9 0 
This is rather an early grass, though later than any of 
the preceding species ; its foliage is very fine, resembling 
the F. duriuscula , to which it seems nearly allied, differing 
only in the length of the awns, and the glaucous colour of 
the whole plant. The considerable produce it affords, and 
the nutritive powers it appears to possess, joined to its early 
