the Philadelphia Centennial Exhibition. 
intention to enter into detail in each case, because I am writing; 
for the English reader, and, without disparagement to American 
and Canadian enterprise, I think that he can supply his wants 
as regards this class of machinery better at home than abroad. 
I shall notice only such machines as appear to possess novelty. 
'The Ixoyce Reaper, manufactured by two or more firms in the States, and 
also in Canada, is remarkable for lightness and efficiency. That which was 
tried, and which was shown by J. S. Royce, Centenary, New York, weighed 
only 435 lbs., and has the following features : a spokeless wheel, solid outside, 
Inning the cogs cast upon the inside of the disc. The axle is fast to the 
wheel, and is connected with a universal rod, which drives the rake-shaft by 
bevel gear. The knife-bar is nearly in a line with the axle, the connecting- 
rod being short ; and the crank is packed inside the wheel. It will be seen 
Fig. 5. — View of the Boyce Bcapcr. 
that the rake-shaft or standard is thus in the same direction as the knife. 
The standard is very low, and consequently the rakes drop on the table in a 
line nearly parallel with the knife-bar. The consequence is, that the grain 
is laid very evenly on the table, and deposited in neat bundles, suitable for 
tying. Each rake-arm is furnished with teeth, and is jointed ; and by a 
clever mechanical arrangement can either be made rigid, in which case it acts 
as a rake, or turns at right angles, so that the teeth feather away from the 
platform : a very pretty motion, which can be either automatic or con- 
trollable at will by a leverage from the driver's foot. It will be seen by the 
drawing that the driver's seat extends outside the wheel, its standard being- 
fixed into the back part of the pole. The driver's weight balances the 
machine ; and this, and the position of the draft, which is taken from a point 
