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much fallen off, having been found too ſevere for the ſoil. Barley found more advantageous(n)..

In Mid Lothian, the Surinam enriches the ground little leſs than a crop of turnips itſelf. All potatoes excellent preparation for wheat%.

In Tweedale, in fields part ſummer fallow, part turnip, part potatoes, and part peas, the crop of wheat or barley that fuccceds, equal after all(½.

In Berwick, Surinam an excellent preparation for barley and graſs ſeeds(.

In Ayrſhire, it is obſerved, that ſo far from exhauſting the land, po- tatoes, when luxuriant, are ſure to be ſucceeded by an abundant crop ſr).

Other Authorities.

In Northumberland, a penalty of 10l. an acre is laid on the culture

by many landlords, under the idea that they exhauſt(5₰.

Mr. Groſett, of Cornwall, is ſure, from experience, that they do not exhauſt; but as ſoon as he perceives the bloom entirely gone, he gathers all the ſeed-apples and gives them to hogs, who devour them greedily: this, he thinks, prevents exhauſtion(*.

MIr. Gilbert got good barley after them(u), in Suſſex.

Dr. Dann, of KEent, does not ſow wheat after them; having, on expe- rience, found the ſoil left in too looſe a ſtate(u.*⁴. They impoveriſh greatly æ.*. From twenty to thirty-five buſhels per acre of wheat gained after potatoes(..

Mr. Buck, of Suffolk, planted two years ſucceſſively on the ſame land; the ſecond crop much more abundant than the firſt, and therefore thought they were not very exhauſting(2..

At Ryehope, near Sunderland, they reckon potatoes an excellent prepa- rative for wheat, and have known five quarters per acre(a.

Mr. Hall, of Kent.— They exhauſt(5..

Mr. Billingſley, on great experience.— Avoid ſowing wheat after them; oats much better(c).

The editor of the Annals formed a comparative experiment of thirty-ſix

(*) Dumfries, App. p. 15.(o) Mid. Lothian, p. 69.(p) Tweedale, p. 29.

(9) P. 131.(r) Ayrſhire, p. 25.(5) Ms. Papers of the Board,

Mr. Daviſon.(t) MsS. information. ſu) Annals, vol. rr. p. 244.

(*) Vol. 20. p. 233. Vol. 23. p. 384(x) Dr. Hunter, Georgical Eſſays, vol. 2. p. 1132.

0) Annals, vol. 2. P. 8.(2) Ibid. vol. 5. p. 253.(a) Ibid. vol. 5. P. 263.() Ibid. vol. 10. p. 4515,