HORTUS GRAMINEUS WOBURNENSIS. 357 



resemble each other: the E. triquetrum, E. angustifolium, 

 and E. polystachion. The E. angustifolium, (the species now 

 under consideration,) differs from the triquetrum in having 

 a thicker and more succulent culm ; the leaves longer and 

 broader, with only one nerve of a reddish colour ; and the 

 fruit-stalks are smooth. It is distinguished from the poly- 

 stachion by its creeping roots ; leaves twice the length ; in- 

 volucre and sheaths smooth, spikelets smaller; fruit-stalks 

 shorter ; and the woolly hairs every where longer. Hort. 

 Gram. Fol. 249. 



German, Schmalbattriges- Wollgras. 

 Native of Britain. Root perennial. 



Experiments. At the time of flowering, the. produce from a 

 bog soil is 



Produce per Acre, 

 dr. qr. Ibs. 



Grass, 12 oz. The produce per acre 8167 8 



80 dr. of grass weigh, when dry - 40 7 ^^ ^ Q 

 The produce of the space, ditto 96 5 



The weight lost by the produce of one acre in drying 4083 12 

 64 dr. of grass afford of nutritive matter 227 319 o 

 The produce of the space, ditto - 723 



On bogs and moors where this grass abounds, cattle crop the 

 leaves in the spring ; but as soon as the finer kinds of grasses 

 afford them a bite, they neglect it. There are many grasses of 

 superior value, that succeed equally well on this kind of soil. 

 When such lands are capable of being drained (which is generally 

 the case), it should be effected, and the soil will then carry the 

 superior grasses, as the meadow-fescue, cock's-foot grass, meadow 

 cat's-tail grass, meadow foxtail-grass, rough-stalked meadow- 

 grass, &c. Where draining cannot be economically practised, 

 the surface should be pared and burnt, and afterwards planted 

 with florin (Agrostis stolonifera, var. latifolia) ; or with the water 

 meadow-grass, (Poa aquatica). If the soil be not too wet for the 

 former, or too peaty for the latter, the produce will be found 

 amply to reward the labour of preparing and planting the soil. 

 Mr. Pennant says, that about April, in the Isle of Skye, the 

 farmers turn their cattle during the daytime to this grass, which 

 springs first, and at night drive them into dry ground again. 



In Germany, Professor Martyn informs us, and in the more 



