118 The Principles of Vegetable -Gardening 



A one-horse harrow is usually known as a culti- 

 vator. But there are two types of cultivators, those 

 which only stir the soil and repair the surface mulch, 

 as the spike - tooth cultivators ; and those which move 

 the soil or even invert it, as the shovel -tooth culti- 



Fig. 32. The onion-bed condition of land. Tilling with the wheel-hoe. 



vators. Are not shovel-tooth cultivators too common 

 and spike-tooth cultivators too rare? 



In the market -garden, the wheel -hoe is important. 

 It saves immensely of hand labor and usually leaves 

 the soil in better condition than hand - work does. 

 Have a number of patterns, large and small. Select 

 a large wheel with a broad tire, that it may ride over 



