96 MANUAL OF GARDENING 
89. Spike-tooth and spring-tooth cultivators. 
For still smaller areas, in which horses cannot be used and 
which are still too large for tilling wholly by means of hoes 
90. Good type of 91. A single-blade 92. Double wheel- 
wheel-hoe. wheel-hoe. hoe, useful in 
straddling the row. 
and rakes, various types of wheel-hoes may be used. These 
implements are now made in great variety of patterns, to 
