144 



^ 



Experiments.— Al the time of flowering, the produce from a siliceous sandy soil, is. 



dr. qr. 



Grass, 15 oz. The produce per acre 

 80 dr. of grass weigh, when dry 



The produce of the space, ditto 



oz. 



163350 



lbs. 



10209 6 



SQ 



- 108 



73507 8 



The weight lost by the produce of one acre in drying 



4594 3 8 

 5615 2 8 



64 dr. of grass afford of nutritive matter 



The produce of the space, ditto - - - 



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

 Grass, 14 oz. The produce per acre 



dr. gr. 



3 10 



n 15 



- 8507 13 



531 11 J3 



152460 



9528 12 



dr. qr. 



40 

 112 



1 2 



80 dr. of grass weigh, when dry 



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 - - 



The produce of latter-math is. 

 Grass, 4 oz. The produce per acre 

 64 dr. of grass afford of nutritive matter 



76230 =^ 4764 6 



4764 6 



IS 



5 II 



4019 15 



251 3 15 



1 2 



- 43560 

 1020 15 



2722 8 

 63 12 15 



r 



A given space of the above sandy soil, and another of a clayey loam, were sown with tlie 

 seeds of this grass on the 20th of Maj^ 1813. The seeds vegetated, and the produce was cut in 

 the month of August following. The seeds of the creeping-rooted bent, (Agrostis alba), and 

 of the larger creeping-bent or florin, C Agrostis stolonif era, \Z!C. latifolia), were likewise soAvn 

 at the same time, and treated under the same circumstances. The results were as follows: 



r* 



The Agrostis vulgaris, on the siliceous sandy soil, from the time of sowing, till the produce was 

 cut, being eleven weeks and five days, afforded of grass -. - _ - 



From the clayey loam, it afforded of grass, in the same time - - - - 



The Agrostis alba, on the siliceous sandy soil, from the time of sowing till the produce was 

 cut, being eleven weeks and five days, afforded of grass - _ - - 



From a clayey loam, it afforded of grass in the same time - - - ■ .. 



The Agrostis stolonifera, var. latifolia, on the siliceous sandy soil, from the time of sowing 

 till the produce was taken, being eleven weeks and five days, afforded of grass 



From a clayey loam, it afforded, in the same time, of grass - - - 



oz. dr. qr. 



1 12 



18 



5 



5 8 



5 4 



1 12 



The Fiorin, in this experiment, is less productive on a clayey soil than the Creeping-rooted 

 Bent, and even ^nuch less on the clayey than on the sandy soil ; however, though its progress 

 be at first slower on the clayey loam, yet, in the second year, the produce from the clayey loam 

 was exactly triple the weight of that from the sandy soil. The Fiorin afforded the greatest pro- 

 duce on the second and third years ; after this, unless top-dressings are applied, the produce de- 

 clines. On peat soils, this effect of the fibrous surface roots, is much less. The Common Bent 

 is one of the earliest of the Bent grasses; in this respect it is superior to every other of this family, 

 but inferior to several of them in the quantity of produce it affords and the nutritive matter it 

 contains. It is the most common grass on natural sandy pastures ; and even on more tenacious 

 soils that are elevated and exposed, it is frequent. 



It flowers from the third week of June till the second week of July, and the seed is ripe the 

 beginning of August. 



