194 



THE planter's GUIDE. 



filled with hay or straw, of at least 6 inches in thickness, 

 so that the bark of the stem can sustain no injury. 



The blocks UUUUU between these two stages, are 10 

 inches long, 4 inches broad, and 6 inches high. The end 

 of the upper stay at X (or at M, fig. 2,) resting on the 

 first stage, represents, in the end view of the machine, 

 another block in that position ; and the end of the pole at 

 Y is seen in the same way, and for the same object. 

 Wherever it can be done, the bolts, for the various pur- 

 poses above mentioned, are shown in the diagram. 



LARGE-SIZED WHEELS. 



These wheels are made of the very best materials, 5i 

 feet high, and nearly upright, the dishing (as the work- 

 men term it) being only 1^ inch. 



The naves are Hi inches long, exclusively of the nave- 

 bands, and 13 inches thick. The spokes are 3^ inches 

 broad, and 1| inch thick ; the fellies 5 inches broad, 

 and 3 inches thick ; the iron rims i inch thick, and 

 usually made in two pieces 2i inches broad each. 



The third wheel, having no great weight to bear, is 

 made light. It is 3^ feet high, and entirely upright, 

 without any dishing. The naves are 9 inches long, 

 exclusively of the bands, and 9 inches thick. The 

 spokes are 2i inches broad, and li inch thick ; the 

 fellies 4 inches broad, and 2 inches thick ; the iron rim J 

 inch thick. The wheel is fixed to the pole by a strong 

 pivot, on which it turns as the steersman may direct, in 

 the same way as the wheel of a plough. 



This wheel, when used, is generally from 2 to 3 feet 

 high, and placed about 3 feet from the point of the pole, 

 at h (fig. 2.) But I should much recommend a different 

 position, (in order to elevate the point of the pole, and, 



