HORTUS GRAMINEUS WOBURNENSIS. 165 



Narrow-leaved meadow-grass (poa angustijolia) 0\ bushel. 

 Broad-leaved creeping bent, or florin (agrostis 



stolonifera, var . Intifolia) 0? 



Ray-grass {lo/itini pereni/e) 1 



White or Dutch clover {trifolium repens) 15 lbs. 



Bush vetch (vicia sepiiim) 0^ bushel. 



Sweet-scented vernal-grass {anthoxanthiim odo- 



ratum) Oi 



Perennial red clover {trifolium pratense perenne) 12 lbs. 

 Achillea tnillej'olium, yarrow 4 



The proper quantity of grass seeds to sow, per acre, is a 

 point of the greatest importance, as regards the expense of 

 the seed, and the speedy formation of the most valuable 

 sward. The circumstances of soil, tilth, and weather, at the 

 time of sowing, all influence in a great degree the successful 

 vegetation of the seed. Should less seed be sown than is 

 sufficient to furnish every part of the soil with plants of 

 grass, a proportionate loss of time, labour, and land, will be 

 suffered. Minute vacancies of plants in a recently-made 

 pasture, or in a held of seedling grasses, may, to general ob- 

 servation, appear insignificant, or escape observation altoge- 

 ther; but if these apparently minute deficiencies which 

 occur over the surface of an acre be calculated, a difference, 

 perhaps, of from ten to fifteen per cent, in the produce will 

 be found to exist between a perfectly furnished surface of 

 land, and one where the deficiencies of plants are so minute 

 as scarcely to be perceived. In the most productive natural 

 pastures no deficiencies of plants are to be found, every part 

 of the surface is closely interwoven with plants ; and not as 

 in pastures artificially funned of one or two species of grass 

 only, where the surface is merely shaded or covered by the 

 foliage of the comparatively thinly-growing plants. A rough 

 uneven surface will require a much greater quantity of seed, 

 than land with a dry, finely-pulverized, smooth, consolidated 

 surface. If the surface be wet at the time of sowing, a 

 greater quantity of seed will be required than otherwise 

 would be necessary. The seeds of most of the essential per- 

 manent pasture grasses are so small and light, as to be rea- 



