ists of disks sawn or chopped from a log and bored for the axle.
The tongue or pole is secured to the axle and forms the frame of the bed, somewhat like a city dray.
Enlargements on the centers of the wheels outside form hubs, to prevent the wobbling of the wheels on the spindles.
The hub and spindles, being of wood, and having a plentiful lack of grease, make music, —such as it is.
The French Engineer Perronet, who executed so many heavy public improvements during the last century (b. 1708; d. 1794), seems to have been capable of great projects, original devices, fanciful ornamentation, graceful designs, and effective details.
His ingenuity was manifested in the centering of his arches, coffer-dams, hydraulic and hoisting machines, and in many other departments which we have had occasion to refer to in their proper places.
For removing the earth excavated in constructing the foundations of his numerous bridges, he used carts in pairs, coupled togethe