date, was railed off, and half an acre of it sown with 8 bushels of the mixture.

Here the effect of the salt was the same as on the unimproved sward. The grass was withered, and did not recover its verdure for several weeks, nor did it afterwards appear to derive any advantage from the application of the salt; on the contrary, the part salted did not, during the season, overtake in luxuriance those parts within the railing, on which no salt was bestowed.

3d, The same day, in a field of first year's grass, one acre of what had been depastured by cattle during the previous part of the season, was sown with 16 bushels of the mixture; and th of an acre of what had been cut for soiling was sown with 4 bushels.

Both plots were saved for subsequent soiling, but on them the smallest visible effect was never produced by the salt. Either from the sward being here more open, or the plants more vigorous than in the older grass fields, no corrosion and withering was perceived, and between the salted and unsalted parts no difference of subsequent growth or luxuriance could be discovered.

V.-On a field of Drilled Turnips.

For this experiment a quantity of good black mould, dug from a bank of travelled eartli, and exposed to the winter frosts, was, on the 7th of May, made into a compost with salt, in the proportion of one bushel of the latter to one cubic yard of the for

mer, and being placed under cover they were intimately incorporated by frequent turnings.

On the 21st of June 70 falls of ground having been manured in the drills with excellent farm-yard dung, at the rate of 14 tons per acre, were sown by the turnip-machine with Norfolk globe, and then sown on the surface with the mixture of salt and ashes, in the proportion of 16 bushels to an acre. 20 falls, dunged in the same manner, were salted upon the dung in the drills at the same rate, the manure covered by splitting the drills, and the turnips then sown. 20 falls were salted in the drills at the same rate, without any dung, the salt covered and the turnips sown. 20 falls were manured in the drills with the above compost, at the rate of 16 bushels of salt and 16 cubic yards of earth to the

the manure covered, and the turnips sown. 20 falls were manured, with the proportion of the compost spread on the surface, which being ploughed in, the land was drilled, and the turnips sown. 10 falls were salted on the surface, at the rate of 16 bushels of salt and ashes per acre, after which the land was drilled, and the turnips sown; and, lastly, a portion of land was drilled and sown without either salt or dung. The rest of the field was manured with farm-yard dung, in the proportion already mentioned, of 14 tons per acre.

The turnips in the 70 falls salted on the surface, after being dunged and sown, were in springing much on a par with those in the unsalted land adjoining; they are equally luxuriant in tops, but inferior in

the size of roots; and on weighing three falls of each on the 3d instant, the difference was found to be exactly as 5 to 4 in favour of the crop on the unsalted land.

The division salted in the drills without dung may be stated as having totally failed of a crop. The few plants which have risen in it were late of appearing the tops are stunted, and the roots of very

diminutive size.

In the other four salted plots, the crop is also irregular and deficient, being inferior to that in the portion sown without any manure, and not half the weight of what was raised with dung alone. Of these four plots the crop is the best on that which was salted upon the dung in the drills, and on that which was salted on the surface before drilling; and it is the worst in the two for which the compost of earth and salt was used.

Such were the experiments made by me, which I beg you will communicate to the Society.

I have the honour to be, Sir, your very obedient humble servant,

PET. CHRISTIAN,

"Having, by actual inspection and otherwise, ascertained the accuracy of the facts stated in the foregoing Report, we do hereby certify the same.

"ROBERT W. DUFF.

" WILLIAM STEWART, J. P.

"7th November 1821."

VOL. VI.

M

IV.-Report of Experiments made by LieutenantGeneral DIROM of Mount-Annan, in the County of Dumfries, with Rock-Salt as a Manure, and as given to Live Stock.

The salt laid down here, with the addition of 10s. for pounding and sifting it by hand, cost nearly L. 6, 10s. per ton.

Wheat.

No. 1.-May 12-Sowed 12 stones upon 2 English statute acres, in four different parts of our fields in wheat, to try its efficacy in preventing mildew. No difference was observed, the whole of the erop being free of that disease this season.

The following experiments were made in part of a field of 20 statute acres at Bridekirk; the soil a clay-loam, on a dry bottom of freestone.

Turnips.

land pre

No. 2.-May 14.-Sowed 12 stones upon pared for turnips, 10 yards wide and 240 yards long. It was ploughed in autumn, harrowed and ploughed in May after receiving the salt. Weight of the erop 10 tons 1 cwt. 2 qrs. 12 lb., per English acre.

No. 3.-June 3.-Sowed 6 stones more upon onehalf of the same ground, which was ploughed and harrowed again, and the turnips sown 15th June. Weight of the crop 10 tons 16 cwt. 8 lb.

The salt sown in No. 2., was at the rate of 241, and No. 3. at the rate of 48 stones to the English

acre.

Crop per

No. 4.-June 15.-Sowed 6 drills 24 feet wide and 240 yards long, with 15 stones salt. English acre 12 tons 1 cwt. 3 qrs. 24 lb.

No. 5.-June 15.-Sowed 6 drills as above, with 9 stones of salt. Crop 11 tons 4 cwt. 2 qrs. 24 lb.

In these two lots, the salt was sown upon the surface and drilled in, and the turnips sown the same day.

No. 6.-May 12.-Mixed 30 stones of salt with 24 cart-loads of 8 cwt. each, of moss or peat-earth. The compost, which was not expected to heat, was twice turned and well decomposed; and on the 22d July laid upon 12 drills 24 feet wide by 240 yards long. Crop 12 tons 1 cwt. 3 qrs. 24 lb. per English

acre.

No. 7.--May 12.-Mixed 24 cart-loads of moss, with 6 cart-loads of dung; and after being heated and turned twice, it was laid upon 18 drills, the same as No. 6. Crop 12 tons 1 cwt. 3 qrs. 24 lb. per English acre.

No. 8.-May 13.-Mixed 24 cart-loads of moss with 36 Winchester bushels of lime in shells. It was turned twice, the moss-soil decomposed and laid upon 18 drills, 28th July, and the turnips sown the