. An encyclopædia of agriculture : comprising the theory and practice of the valuation, transfer, laying out, improvement, and management of landed property, and of the cultivation and economy of the animal and vegetable productions of agriculture. e of smaller deviations from the flat surface. Inaccessible dimensions of height,;is of trees or buildings, are obtained by the quadrant, or by relative comparisons ofshadows; of depth, as of water or wells, by rods ; of breadth or length, by finding thetwo angles of a triangle whose base shall be in one extremity of the distance, and apexin the oth
. An encyclopædia of agriculture : comprising the theory and practice of the valuation, transfer, laying out, improvement, and management of landed property, and of the cultivation and economy of the animal and vegetable productions of agriculture. e of smaller deviations from the flat surface. Inaccessible dimensions of height,;is of trees or buildings, are obtained by the quadrant, or by relative comparisons ofshadows; of depth, as of water or wells, by rods ; of breadth or length, by finding thetwo angles of a triangle whose base shall be in one extremity of the distance, and apexin the other. These, and many other equally simple problems in trigonometry, need notbe enlarged on, because they must be supposed to form a part of general education. 3351. In portraying the general surface of land estates, different modes have beenadopted by modern land-surveyors. The first vvc shall mention is the old mode of givingwhat may be called the ground-lines only ; as of roads, fences, water-courses, situationsof buildings and trees. (Jig. 526.) This mode has no other pretension than that ofaccuracy of dimensions, and can give few ideas to a stranger who has not seen the pro-perty, beside those of its contents and general outline. 526 527. SS52. In the second, elevations of the objects are added to these lines; but which, incrowded parts, tend much to obscure them. (Jig. 527.) This mode is perhaps the bestcalculated of any to give common observers a general notion of an estate ; more especiallyif ably executed. Very frequently, however, this mode is attempted by artists ignorantof the first principles of drawing, optics, or perspective, and without taste. The Ger-mans who, in general, are far better topographical draughtsmen than any other people,excel in this manner, and contrive, by joining to it Lehmans mode of shading the sur-face, to produce pictorial plans of extraordinary accuracy and beauty. The mostperfect artist in this style who has ever appeared in England is Mr.
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Keywords: ., bookcentury1800, bookdecade1870, bookpublisherlondo, bookyear1871
