80 



The weight of grass at the time the seed is ripe, is less than that at the time of flower' 

 which at first sight appears contrary to what might have been expected, as the grass had ^' 

 least three weeks of growth more than that of the flowering crop. But after the time of flow 

 ing, the leaves do not appear to increase, but rather diminish, many of them becoming co 

 pletely dry before the seed be perfected. The culms retain their succulency, and bee 

 heavier till the seed be ripe, which points out the true cause of the superior quantity of nm " 

 tive matter contained in the grass of the seed crop. 



Dr. Smith informs us, that it is an Alpine plant, and only as yet found a native of S 

 land, where it was found by Mr. Mackay, on Ben Lawers. It appears, however, to be ea 1 

 cultivated on soils of an intermediate quality as to moisture and dryness. Its seed is Pood . i 

 produced in plenty. 



The above details prove this grass to be capable of cultivation; but possessed of no exc 1 

 lence in a sufficient degree to render it worthy of a place in the composition of good pasture 



It flowers in the third week of June, and the seed is ripe about the second and last week f 

 July, according to the state of the weather. 



Poa glauca. Glaucous Meadow-grass. 



Specific character: Panicle glaucous, slender, erect, silky-edged, unconnected witb any 

 web ; spikets very short, 



Obs. — This species resembles the Poa nemoralis, and, in a less degree, the P. trivialis, and 

 likewise affects a similar soil ; while the preceding species resembles more the Poa alpim, 

 Poa subccemka, and Poa prat ensis, and, like these, affects a somewhat drier soil Calms 

 from a foot and a half to two feet in height. 



Native of Britain. Root fibrous. Perennial. 



Experiments.— At the time of flowering, the produce from a rich black sandy loam, is, 



dr. 



8 



Grass, 13 c/z. The produce per acre is 



SO dr. of grass weigh when dry 



The produce of the space, ditto 



64 dr. of grass afford of nutritive matter 



The produce of the space, ditto 



The weight lost by the produce of one acre in drying 



At the time the seed is ripe, the produce is, 

 Grass, 15 oz. The produce per acre 

 ^ 80 dr. of grass weigh, when dry p 

 The produce of the space, ditto 

 The weight lost by the produce of one acre in drying 

 64 dr, of grass afford of nutritive matter 

 The produce of the space, ditto 



qr, 



32 



83 1 



2 2 



OZ, 



141570 

 56628 



lbs. 



8848 



S5^9 4 



Oi 



5530 1 



345 10 

 5308 14 



163350 6 



108 



n 



73507 8 



2 3 



10 



1?-- 



7018 15 



10209 6 



4594 3 8 



5615 2 8 



438 10 15 



This grass is said to be a native of the North of England, and Scotland. It inhabits alpine 

 situations, but is easily propagated, as it perfects plenty of seed, which vegetates freely on 

 almost every kind of soil. It grows to a larger size than the Sea-green Meadow-grass ; and if 

 the above details of its produce, and nutritive powers, be compared with those of that grass, it 



