The sylva americana; or, A description of the forest trees indigenous to the United States, practically and botanically considered . esurface between these into ridges. On steep acclivities, rocky soils, and thin heath, or moorlands, incumbent on rock or shale, where ploughing or trenchingis impracticable, a depth of pulverized soil cannot be obtainedfor the reception of the roots of trees of more than two, or atmost three years growth ; the mattock planter, diamond dibble,and spade, can be used with the best effect. To attempt anymore expensive preparation on such lands, than may be made byth
The sylva americana; or, A description of the forest trees indigenous to the United States, practically and botanically considered . esurface between these into ridges. On steep acclivities, rocky soils, and thin heath, or moorlands, incumbent on rock or shale, where ploughing or trenchingis impracticable, a depth of pulverized soil cannot be obtainedfor the reception of the roots of trees of more than two, or atmost three years growth ; the mattock planter, diamond dibble,and spade, can be used with the best effect. To attempt anymore expensive preparation on such lands, than may be made bythese implements for the reception of the individual plants, wouldbe injudicious. For the preparation of heath soils, incumbent onsand or loose gravel, an improved paring plough (Plate 110^Fig. 9 and 10), which we call Fyshe Palmers planting plough,is a valuable implement. The plough consists of two mold boards as in common use, butresting on a triangular and somewhat convex plate of iron(Fig. 9). This iron plate is furnished with sharp steel edgesrivetted to it (Fig. 10, c). The fixed share (a, Fig. 10), 372 SYLVA AMERICANA. ^#. which divides the turf foreach side of the doublemoldboard, six inches highat the shoulder, with asharp edge tapering to apoint at (6). The sole of theplough is screwed and bolt-ed to the instrument by thebolt sockets (e), and the nutscrew sockets (^d). Thebase of the triangular plate(/, Fig. 9) is twenty-oneinches, with a curve ofone inch, which facilitatesthe action of the instrumentPLATE ex. when paring in gravelly or stoney ground. The whole length of the plate is thirty-fiveinches from the base (/) to the point of the share (6). Whereverthe land is of a moderately level surface, and when paring is de-sirable, this plough will be found a valuable Implement. Thewhole surface may be pared as in clayey soils, where burning tlieturf is essential; or spaces of twenty-one inches, as in heathsoils, may be pared off with intervals of thirteen inches, on whic
Size: 1428px × 1749px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., boo, bookcentury1800, booksubjectforestsandforestry, bookyear1832
