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. HARROWS. 413 Farmers' Society. (See Farm. Mag. vol.
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. HARROWS. 413 Farmers' Society. (See Farm. Mag. vol. xxi. p. 1.) The machine consists of a barrel, which is mounted upon a cart frame, and discharges water from a bull stop-cock having four mouths (n) communicating by means of a leathern hose with four horizontal tubes (b /> b b), shut up at the end by a screw (c), which admits of the tube being cleaned. The tubes are placed parallel with the chills, two between the wheels of the cart, and one on the outside of each wheel; the distance of the tubes, and their height from the surface, are regulated by hooks and chains ; and the water is discharged in small streams, through twenty projecting apertures in the under part of the tubes. The tubes are suspended by chains to the hooks in an iron rod secured to the fore and back part of the frame of the cart. The mouth of the funnel on the top of the barrel is covered with a wire-cloth, to prevent any thing getting in to clog the apertures. The quantity of water let out by the apertures being less than what is received into the tubes, the tubes are always full; by which a regular discharge is kept up from all the apertures at the same time. As the machine advances, the stream which falls from the first aperture upon the plants is followed up by successive streams from all the apertures in the tube; therefore each plant must receive the discharge from twenty apertures. 2693. Estimate of its operation. — Supposing the barrel to co
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