821April 6th. 1754. (Adams Papers)
The phaenomina of The nature of the Pulley, axis in peritrochaeo, and inclined Plane explained,...
822April 8th. 1754. (Adams Papers)
The Theory of simple machines and in particular of the inclined plane, of the wedge and screw,...
823April 9 1754. (Adams Papers)
Sir Isaac Newtons three laws of nature proved and illustrated, together with the application of...
824April 10, 1754. (Adams Papers)
The theory of Centrifugal forces, continued; and aplyed to the Cases of the planets; and from...
825April 11 1754. (Adams Papers)
Some thing’s observed concerning gravity, which encreases as you approach the Center of the earth...
826Pennsylvania Assembly: Reply to the Governor, 12 April 1754 (Franklin Papers)
Printed in Votes and Proceedings of the House of Representatives , 1753–1754 (Philadelphia,...
827From Benjamin Franklin to Samuel Johnson, 15 April 1754 (Franklin Papers)
ALS : Columbia University Library When I return’d from Maryland in February last, I found your...
828From Benjamin Franklin to Peter Collinson, 18 April 1754 (Franklin Papers)
Copy: New-York Historical Society Since September last, having been abroad on two long Journeys,...
829From Benjamin Franklin to William Smith, 18 April 1754 (Franklin Papers)
ALS : Historical Society of Pennsylvania I have had but one Line from you since your Arrival in...
830From Benjamin Franklin to William Strahan, 18 April 1754 (Franklin Papers)
ALS : Pierpont Morgan Library; also duplicate: New York Public Library By Capt. Gibbon I received...