Early Diary of John Adams, volume 1

April 6th. 1754.

April 9 1754.

April 8th. 1754. JA


April 8th. 1754. Adams, John
April 8th. 1754.

The Theory of simple machines and in particular of the inclined plane, of the wedge and screw, and other machines compounded of these simple ones, finish’d.