AMERICAN HOME OAKDEN. 



41 



wing of the mouklboard left off, so that it is calculated for stir- 

 ring the earth without turning the fiUTOw-slice over. It may 

 therefore be driven deeply between growing crops without risk 

 of covering them, though it suffices in general to form hills of 

 the most desirable kind. See Hilling. It is often called 

 the " Potato Plow," from its very connnon use in that crop. 

 The best double mouldboard plow (Fig. '20) is a small sin- 

 gle-handled plow, with 

 two movable mould- 

 boards («), the fore 

 edges of which fit into 

 grooves in the stand- 

 ard, and are kept firm- 

 ly in p)lace by a wood- 

 en wedge at the beam, 

 each being braced out- 

 ■B ward by a small wood- 

 en pin (c) near the 

 heel. The share is of 

 a triangular or duck- 

 bill foiTu (6), fitting on 

 to the point of the sole, 

 and secured to it by a 



Iiouble mouldboard Plow. WodgO On itS Uudcr 



side. It is used for hilling potatoes, kc., after the earth has 

 been first plowed from them. 



In light, clear soils it may be useful, but in ordinary land 

 must be run shallow and scooping, and works misteadily, and 

 on various accounts can seldom be made to save labor without 

 corresponding loss to the crop. Larger and stronger ones are 

 made, which, except possibly for ridging, are still less valua- 

 ble. 



The skeleton plow (Fig. 21) is, in fact, a small subsoiler, 

 made by taking oif the douljle mouldboards from Fig. 20. It 

 closely resembles the old Roman plow, without its wings or 

 triangular followers. This plow is invaluable in the opera- 

 tions of the fiu-m gardener, particularly for giving the last deep 

 movement to the earth between the rows of iirowinff vegeta- 



