. Elements of practical agriculture; comprehending the cultivation of plants, the husbandry of the domestic animals, and the economy of the farm. 102 MACHINES FOR SOWING — makers of the instrument, the roller with the larger, is supe- rior to that with the smaller, cylinder. It is conceived that it can be fairly deduced from a consideration of the form and mode of action of the machine, that comparing together two rollers with cylinders of unequal diameter, that with the larger cylinder will be more efficacious than that with the smaller cylinder, because a greater weight can be brought by the
. Elements of practical agriculture; comprehending the cultivation of plants, the husbandry of the domestic animals, and the economy of the farm. 102 MACHINES FOR SOWING — makers of the instrument, the roller with the larger, is supe- rior to that with the smaller, cylinder. It is conceived that it can be fairly deduced from a consideration of the form and mode of action of the machine, that comparing together two rollers with cylinders of unequal diameter, that with the larger cylinder will be more efficacious than that with the smaller cylinder, because a greater weight can be brought by the exertion of the same force to act upon the ground. The manner of using the roller, and the cases in which it is to be employed, will be afterwards explained. The weight of the roller may vary with the nature of the soil upon which it is to act. On farms of stiff clays it may be from 16 to 20 cwt., and on the lighter class of soils a weight of 12 cwt. is sufficient. The cast-iron roller is subject to be broken when dragged along a hard road, to obviate which may be employed a low frame on wheels, on which the roller is then to be V. MACHINES FOR SOWING. 1. Machines for Sowing Corn in Rows. The seeds of the different kinds of corn may be sown, either by being scattered irregularly upon the surface, or by being deposited in rows at given distances from one another. The. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Low, David, 1786-1859. London : Longman, [etc. , etc. ]
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