The Gardeners' Chronicle and Agricultural Gazette . eep ; the ground wasthus somewhat hard: it is a deep siliceous loam,above the quartzose conglomerate of the old red sand-stone formation. Two parallel lines oO yards apartwere drawn across the field, including that portionof it which was considered to be of the most uniform . I texture. The plough under trial was taken once or in refereiice to the common dynamometer, and even | oftener tip and down the field, round the feering,t^ that also which has been improved lay Messrs. \ the dimensions of the furrow-slice being carefully Cottam and Hall
The Gardeners' Chronicle and Agricultural Gazette . eep ; the ground wasthus somewhat hard: it is a deep siliceous loam,above the quartzose conglomerate of the old red sand-stone formation. Two parallel lines oO yards apartwere drawn across the field, including that portionof it which was considered to be of the most uniform . I texture. The plough under trial was taken once or in refereiice to the common dynamometer, and even | oftener tip and down the field, round the feering,t^ that also which has been improved lay Messrs. \ the dimensions of the furrow-slice being carefully Cottam and Hallen—a woodcut of which is annexed,and a description of which will be found at page 593of our last years volume—the oscillations of theindex of the instrument are so frequent and inces-sant—owing probably in part to the gait of thedraught animals, but chiefly to an unevenness in thetexture of the soil—that the most practised and dis-interested observer can rarely feel confident that hehas correctly estimated its average position on COTTAmS By Mr. Clyburns Dynamometer however, theseoscillations, instead of being left to the infinitesimalchance of a fair collation and correct reduction toaverage in the mind of the observer, are registeredon paper with beautiful and minute accuracy at eachmoment of their occurrence. The woodcut belowgives the general form of this instrument:— * The Journal of tLe English Agricultural Society, p. 219, vol. i.
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Keywords: ., bookcentury1800, bookdecade1840, bookidg, booksubjecthorticulture
