36 % 
XXVIII. Lolium perenne. Engl. Bot. 315. Flo. Dan. 717® 
Perennial rye-grass. Nat. of Britain. 
At the time of flowering, the produce from a rich brown 
loam is 
oz. or lbs. per acre. 
Grass, 1 1 oz. 8 dr. The produce per acre - 125235 0 = 7827 3 0 
SO dr. of grass weigh when dry . 84 dr. ? S3156 13 = 3322 4 13 
The produce of the space, ditto - 78^ S 
The weight lost by the produce of one acre in drying -■ 4494 14 3 
64 dr. of grass, afford of nutritive matter 2.2 dr. 1 4891 15 — 305 11 15 
7* Of J 
The produce of the space, ditto 
At the time the seed is ripe, the produce is 
Grass, 22 oz. The produce per acre - 239580 0 
80 dr. of grass weigh when dry - 24 dr. 1 
The produce of the space, ditto - 105.2| ) 
The weight lost by the produce of one acre in drying 
14973 12 
71874 0 = 4492 2 
10481 10 
10294 7 = 
643 6 
64 dr. of grass afford of nutritive matter 2. 3 dr. 1 
The produce of the space, ditto - 15.0^ ) 
The weight of nutritive matter which is lost by taking the crop 
at the time of flowering, nearly one-half of its value - 337 
The proportional value which the grass, at the time of 
flowering, bears to that at the time the seed is ripe is as 
10 to 11. 
The produce of latter-math is 
Grass, 5 oz. The produce per acre - 54450 0 = 3403 2 0 
64 dr. of grass afford of nutritive matter 1 dr. - 850 12 = 53 2 12 
The proportional value which the grass of the latter- 
math bears to that at the time of flowering, is as 4 to 10, 
and to that at the time the seed is ripe, as 4 to 11. 
XXIX. Poa maritima . Engl. Bot. 1 1 40. 
Sea meadow-grass. Nat. of Britain. 
At the time of flowering, the produce from a light brown 
loam is 
Grass, 18 oz. The produce per acre 
80 dr. of grass weigh when dry - 32 dr. 
The produce of the space, ditto - 115.^ 
The weight lost by the produce of one acre in drying 
64 dr. of grass afford of nutritive matter 4.2 dr. ' 
The produce of the space, ditto - 20. 1 
2 dr, ") 
I 
196020 0 = 12251 4 
78408 O = 4900 0 
7350 4 
i3782 0 = 861 6 
The produce of latter-math is 
Grass, 18 oz. The produce per acre - 196020 0 = 12251 4 0 
64 dr. of grass afford of nutritive matter, 1 dr. 3062 13= 191 631 
The proportional value which the grass of the latter-math 
bears to that at the time of flowering is as 4 to 18. 
