The Gardeners' Chronicle and Agricultural Gazette . es be 18 stones, at 7inches it \\t11 be as 49 to16, or 54 stones. I putthe question again to thetest two days later, upona poor moory soU, withFergusons Scotch Swingplough. We began with ao-inch fiirrrow, and wentlower each furrow until theplough was a foot in theground. The increase ofdraught was as follows :— rinTow 9 in. wide. Draught iu Depth in inches. Stones. 5 ... 23 6 ... 22 7 ... 25 8 ... 30 9 ... 31 10 ... 40 11 ... 50 12 ... ... 50 This is a difficult experi-ment to make, and some ofthe numbers show that wedid not succeed alwaysin
The Gardeners' Chronicle and Agricultural Gazette . es be 18 stones, at 7inches it \\t11 be as 49 to16, or 54 stones. I putthe question again to thetest two days later, upona poor moory soU, withFergusons Scotch Swingplough. We began with ao-inch fiirrrow, and wentlower each furrow until theplough was a foot in theground. The increase ofdraught was as follows :— rinTow 9 in. wide. Draught iu Depth in inches. Stones. 5 ... 23 6 ... 22 7 ... 25 8 ... 30 9 ... 31 10 ... 40 11 ... 50 12 ... ... 50 This is a difficult experi-ment to make, and some ofthe numbers show that wedid not succeed alwaysin keeping the properdepth of our furrow. Stillthey are near enough toprove that the law of in-crease laid down in booksis altogether erroneous;since, if thatwere the correct rate, thedraught at afoot wouldhavebeennot50 stone, but132. The annex-ed figures,drawn by ouirecording dy-namometer,lead to a si-milar conclu-|sion; the fol-lowing arethe facts de-ducible fromthem:— IS I 478 THE AGRICULTURAL GAZETTE. [July 12, BARRETTS WHEEL PLOUGH. Fig. FuEKOW—4 X 9. 6x9- We have onl) to add that these Diagrams arestrikingly corroborative of a remark b} Mr. Pcseyregarding the Table extracted above from his re-port. He says, It should be remarked that theScotcli ploughs increase very little in draught asthey go deeper ; indeed, these ploughs appearedthroughout to most advantage when they were lowin the ground. Now it is not by anj means probablethat that form of mouldboard and arrangement ofshare, sock, &c., which would form a plougli of leastdraught at a given depth in the land, would alsoform the plough of least draught at any otherdepth. And true economy would advise such aconstruction of the implement as would occasionthe least draught when working deep, rather thanwhen v\-orking shallow, for it is in the former caseonly that the draught animals require relief. Forthis reason, and in this respect, the construction ofthe swing ploughs of Fekgoson and Barkowman ismore praiseworth
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