feason, the extreme humidity of which may have materially injured the crop. The data therefore are much too imperfect to establish the maximum at three facks. Should farther experiments prove that the crops approached to four facks per acre, the profits would be greatly enhanced: fuppofe, for example, that the average crop fhould be stated at not more than three facks and a half, each half fack having yielded, according to Mr. B.'s account, twentyfour pints, which is equal to three gallons, in value one pound per gallon, this circumftance alone would advance the profit to eight pounds per acre.

I must farther obferve that the purchase of the prefs is made to be a deduction from the profits, but as this is an expence which will not recur, it ought not to be stated to the debtor account of the first produce; and not having been informed of the price of the inftrument, we are not able to ascertain the deduction to be made on account of it.

Another important circumftance is, Mr. B. has not attempted to exprefs by heat the oil remaining in the cakes, which would have yielded a confiderable quantity, though of an inferior value. It is acknowledged that it would deduct from the value of the cakes, but by no means proportionately to the value of the oil thus extracted. Thefe circumstances being clearly confidered, render it no extravagant fuppofition, that the profits would amount to at leaft 10l. per acre.

I am glad to find that Mr. B.'s obfervations accord with mine, respecting the quality of the feed not being injured by the fcarification of the capfulum in a green state. If further obfervations fhould corroborate the fact, there cannot be any apparent objection to my propofal, to obtain opium from the fame poppy which furnishes the oil. Could this be done in a fatisfactory manner, the culture would yield a very extracrdinary profit to the cultivator.

Respecting the difproportion between the quantity of feed, which Mr. V. Eys hath stated to be the produce of his land, and that produced upon the land of Mr. Box, I agree with him that there must be a mistake concerning the fize of the facks; which it is not now in my power to rectify. The Dutch acre is nearly double in quantity to that of the English, as I have formerly stated; but this will not folve the difficulty. The experiment itself, however, is not invalidated by this deficiency of information as the grand object is to afcertain the quantity and quality of the poppy oil to be produced by its cultivation in England, in anfwer to the enquiry whether it may not be equally deferving of cultivation with us, as it is in France, Brabant, Germany, and Holland.

Society's Rooms, Dec. 21, 1812.

T. COGAN.

A

ARTICLE X.

ESSAY

ON

THE IMPROVEMENT

OF

DARTMOOR FOREST;

AND

On the means of so much INCREASING our GRAIN CROPS as to make future Importation unnecessary;

BOTH TO BE ATTAINED BY THE AID OF

FIORIN GRASS.

Addressed to Sir BENJAMIN HOBHOUSE, Bart. President of the Bath and West of England Agricultural Society.

By WILLIAM RICHARDSON, D. D.

HONORARY MEMBER.

CONTENTS.

SUBJECT of this Effay.-The favourite objects of the Bath Society, and of their Prefident; that of the former, the improvement of Dartmoor by Fiorin Grafs; that of the latter, ftoppage of the ruinous Importation of Foreign Corn.-Strong reafon to hope that the improvement of Dartmoor will follow the introduction of Fiorin Grafs.-Certainty that a general cultivation of Fiorin will fuperfede the neceffity of importing Corn.-Two modes of augmenting domestic supply suggested by the Prefident. Fiorin particularly adapted to each.-Third mode, more important than either, to be derived from Fiorin alone.-Dartmoor compofed moftly of mountain, and moor, and morals, three defcriptions of ground favourable to Fiorin; and long the object of the Author's attention, experiments, and practice.-First step to the improvement of Dartmoor, scattering meadows of Fiorin through it.—Cultivation a necessary confequence of meadows.-Should foil or climate be too harsh for corn, a profusion of hay certainMode of afcertaining if Fiorin meadows can be formed on Dartmoor; and if fo, whether they will scatter cultivation around them.-Thefe points afcertained.-Mode of introducing population through Dartmoor.-Trifling expence incurred by these measures.-Short time required to afcertain and carry these points.