IMPLEMENTS. 345 



spade that we know of no market gardener who would 

 allow his ground to be dug, even if it were done free of 

 cost. 



To avoid the frequent change of shares, and the extra 

 cost of replacing them, a reversible, 

 self-sharpening slip point (see figure 

 115), is now made. When the bottom 

 of this point is worn, . and the plow 

 tends to run out of the ground by rea- 

 son of the rounded point, the slip point 

 Fig. us. SLIP SHARE. i s taken out and reversed, and thus 

 doubles the length of its useful life. 



Miner's Gold Medal Subsoil Plow (figure 110), is the 

 best subsoil plow we know of. It involves new princi- 

 ples, and accomplishes the work of stirring, loosening 

 and draining the soil beneath the furrow of the common 



Fig. 116. MINER'S SUBSOIL -PLOW. 



plow, lifting and breaking (but not turning) the sub- 

 soil to the depth of fifteen to twenty inches, as may be 

 desired. On very stiff soils, we use the subsoiler once in 

 two years ; in lighter soils not so often ; although if 

 time would always permit, there is no doubt but that it 

 would be beneficial to use it whenever plowing is done. 



The Garden Harrow (figure 117) we find is well 

 suited for garden work. It contains some forty teeth 

 about ten inches long. These are driven through the 



