AMERICAN HOME GARDEN. 45 



Sometimes the t\v'o outer back teeth have only single-mould 

 shares, which, by changing from side to side, may be set so as 

 to tm-n their little fm-rows either to or from the rows between 

 which they may be running. The beam may be dispensed 

 with if the rack and gauge-wheel described below is preferred. 

 The cultivator is a mere sm-flice implement, and unless, pos- 

 sibly, in very light soils, will not save much labor, except at 

 cost of crop. The single-horse plow, or the half mouldboard, 

 followed by the corn haiTow, does greatly superior work. 



The semicircular rack,&c. (Fig. Ii6 a) consists of two perfora- 

 ted and matched cast-iron Ijands, with brace- 

 bands across the diameter. The brace- 

 bands have at the forward end projecting 

 sockets, in which the arms of the gauge- 

 wheel axle work. They have also a single 



Cast-iron semicircular ^'^^^ '^* ^hc ccntrc, by whlch they are se- 

 Eack and Gauge-«-i)eei. (.^^.q^i ^q the bar with' a bolt that forms the 



axle of the rack. Upon this it is moved at pleasure, and set to 

 the desired depth by means of a loose pin or bolt passed through 

 the rack-holes above or below the bar ; the draught is by a 

 movable link, which can be fixed at any point in the semi- 

 circle. 



The rack is made to suit a bar of about fom' inches width, 

 and can Ije fitted in a few minutes to any harrow or cultivator 

 having its centre-bar of sufiicient length beyond the hinges. 



SEED-SOWERS. 



The corn-planter. Fig. 27, p. 46, is a skeleton plow, with a 

 hopper, sowing-tube, and covering apparatus attached, con- 

 nected W'ith a contrivance which, by a spring, or circular brush, 

 or otherwise, passes the requisite amount of seed from the hop)- 

 per into the tulie for planting, at the proper distances. There 

 are several good ones patented ; the figure represents Emery's. 



The hand seed-sower, or " barrow drill," Fig. 28, p. 46, is a 

 smaller machine, but of the same general description as the 

 corn-planter. In well-prepared soil it makes the drill, sows 

 the seed, either continuously or at given distances, covers, and 

 gently presses it. Sometimes the arrangement for covering is 



