. Elements of practical agriculture; comprehending the cultivation of plants, the husbandry of the domestic animals, and the economy of the farm. THE GRUBBER. 97 One of this class of instruments, termed Finlaison's Harrow, from the name of its inventor Mr John Finlaison, has been found to be an efficient machine. It is made wholly of iron. It consists of two parallel sides A A, with two sets, or pairs, of cross-bars, as shown in the figure. Into the hindmost of these sets are inserted five curved teeth or prongs, and into the fore- most four prongs. A little before the foremost prongs, the sid
. Elements of practical agriculture; comprehending the cultivation of plants, the husbandry of the domestic animals, and the economy of the farm. THE GRUBBER. 97 One of this class of instruments, termed Finlaison's Harrow, from the name of its inventor Mr John Finlaison, has been found to be an efficient machine. It is made wholly of iron. It consists of two parallel sides A A, with two sets, or pairs, of cross-bars, as shown in the figure. Into the hindmost of these sets are inserted five curved teeth or prongs, and into the fore- most four prongs. A little before the foremost prongs, the sides begin to converge so as to meet at B, where they are at- tached by a bolt to the long handle 0, fixed to which, by a con- necting bar, is the wheel D, which runs upon the surface. Be- hind is a species of spring E, consisting of two elastic rods with openings, and supported in the manner shown in the figure. The handle, which is retained in its place in the openings of the spring, may be forced up and down by pressing it; and as the handle and the fore wheel are joined together, by raising the handle the fore wheel will be raised also, and the prongs allowed to go deeper into the ground. When the handle is at the lowest opening in the spring, the foremost prongs are lifted out of the ground ; and in proportion as the handle is pressed up into each successive opening, the prongs descend, until the handle is at the topmost opening, when they will be between eight and nine inches in the ground, which is the greatest depth at which it is necessary to set them. The axles of the two hindmost wheels, may, by means of an apparatus attached to the side bar, be elevated or depressed, and thus the hinder prongs made to correspond in the depth at which they are set with the foremost. Fig. 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 rese
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