HOIITUS GRAMINEUS WOBURNENSIS. 219 



Produce per Acre, 

 dr. qr. Ibs. 



Grass, 30 oz. The produce per acre is 20418 12 



80 dr. of grass weigh, when dry 25 7 



The produce of the space, ditto - 150 3 



The weight lost by the produce of one acre in drying 14037 14 4 



64 dr. of grass afford of nutritive matter 2 17 



The produce of the space, ditto 16 3J i 



The produce of latter-math at two different cuttings is 

 Grass, 28 oz. The produce per acre 19057 8 



64 dr. of grass afford of nutritive matter 217 

 The produce of the space, ditto 15 3 3 



The weight of nutritive matter contained in the latter-math 

 herbage is equal to that afforded by the flowering herbage. The 

 plant, as it passes this stage of growth, becomes woody, particu- 

 larly at the bottom of the stalks. It pushes forth flowering-stems 

 during all the summer and autumn, if never suffered to perfect its 

 seed. It withstands the effects of severe dry weather better than 

 most pasture plants ; continuing to flower, even when the surround- 

 ing herbage is burnt up on strong loamy soils. The white clover 

 (Trifolium repens), and the hop clover (Trifoliumprocumbens), are, 

 at least so far as my observations have extended, the only plants 

 beside that retain verdure and powers of growth under such cir- 

 cumstances. There were favourable opportunities, during the 

 long-continued season of dry weather in this year (1815), to ob- 

 serve the powers of different grasses and plants to resist the effects 

 of drought : there were no plants on ancient pasture land, on lighter 

 soils, or on clays, that appeared so little affected by it as those I 

 have mentioned. The common quaking-grass (Briza media), was 

 to all appearance completely dried up, while on a sandy soil, a rich 

 black loam, and a strong clayey soil, the fine bent-grass, (Agrostls 

 capillaris), and the different varieties of the stoloniferous bent- 

 grass or florin, were, with respect to foliage, in the same state as 

 the quaking-grass. This property, therefore, gives additional 

 value to the perennial red clover. 



On a comparison of the produce and nutritive qualities of the 

 broad-leaved clover ( Trifolium pratense) with those of the above, 

 the broad-leaved clover is found to be greatly superior. 



The broad-leaved cultivated clover (Trifolium pratense), 



