at Home and Abroad, 
227 
{Fig. 18) of the interior of the box, explain in detail the nature 
of the mechanism, by means of which this result is obtained. 
The cast-iron table, a', rests on three feet {a, a', a"), and supports 
an ordinary chaff-cutter wheel, the rim of which is armed with 
twelve palettes (a), which act in the enclosing- box as a blast- 
fan, and so elevate the chopped material as fast as it is cut. 
Q 2 
