An encyclopædia of agriculture [electronic An encyclopædia of agriculture [electronic resource] : comprising the theory and practice of the valuation, transfer, laying out, improvement, and management of landed property, and the cultivation and economy of the animal and vegetable productions of agriculture, including all the latest improvements, a general history of agriculture in all countries, and a statistical view of its present state, with suggestions for its future progress in the British Isles encyclopdiaofa01loud Year: 1831 Book IV. DRILL MACHINES. 411 &=&*~ culture, so as not onl
An encyclopædia of agriculture [electronic An encyclopædia of agriculture [electronic resource] : comprising the theory and practice of the valuation, transfer, laying out, improvement, and management of landed property, and the cultivation and economy of the animal and vegetable productions of agriculture, including all the latest improvements, a general history of agriculture in all countries, and a statistical view of its present state, with suggestions for its future progress in the British Isles encyclopdiaofa01loud Year: 1831 Book IV. DRILL MACHINES. 411 &=&*~ culture, so as not only to clean the surface as between dibbled rows, but to stir and â work the soil, and produce a sort of semi-fallow. 2687. Of turnip drills, the best, when this root is cultivat- ed on a large scale, is the im- proved Northumberland drill. (_/&.344.) The roller(a) which goes before the seed has two concavities, and thus leaves the two ridgelets in the very best form for the seed; after these are sown, two light rollers (o b) follow and cover them. It is drawn by one horse, sows two rows at once, and seldom goes out of repair. 25S8. Common's (sometimes French's) turnip drill (Jig. 345.) is generally considered one of the best. Common was a cartwright at Uen- wick, near Alnwick, and received a medal from the Society of Arts, and twenty guineas from the Highland Society, for his invention, in ISIS. He made the machine of wood ; but iron being found so much more suit- able and durable, the manufacture of Common's drills fell into the hands of blacksmiths, and chiefly of French of Alnwick, from which cir- cumstance it is frequently known by that maker's name. The machine is easily put in and out of gear by means of a lever (a); and since it has become the fashion to sow pulverised manure with turnip seed, two hoppers (bb) have been added for that purpose. The seed and ma- nure, when deposited in the gutter traced by the coulters (c c) are co- vered by two small flat rollers, as i
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