[NUMBER 4. VOLUME VIL] and carrying pins or studs, at any suitable dis- THE Scientific American, tances apart. V isa small metal block fitted CIRCULATION 16,000. to the slot in the plate, C,and capable of PUBLISHED WEEKLY sliding along it ; it has asmall tongue, 2, stand- … ing in it, and is inserted in the square hole in mack Milis, Lowell; and W. P. Parott, engi- the cam,G. The bed piece is then brought to neer, Boston. Six engines were run, but the the required position on the stone for commen- result of the race, so far cing the operation. The blocks, I and V. are…
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