1From Benjamin Franklin to Thomas Clap, 28 November 1751 (Franklin Papers)
ALS : Universitätsbibliothek, Sammlung Kestner, Karl Marx Universität, Leipzig I am heartily sorry for your Disappointment in Letort; I could not have imagin’d he would have behav’d so imprudently, and let so very profitable a Jobb slip thro’ his Fingers. I have done with him. I hope you will be able to procure a Subscription to furnish your College with a compleat Apparatus for Natural...
2From Benjamin Franklin to Thomas Clap, 20 August 1753 (Franklin Papers)
ALS : Miss S. Berenice Baldwin, Woodbridge, Conn. (1959) I arrived here well (Thanks to God) on Friday about Noon, and had the Pleasure of hearing from my Family, that all were well at home. I see the Proposal of Purchasing from the Six Nations is mention’d in the Boston Papers, which I wish had not been done, as it may give Notice to the French, and put them on taking some preventive...
3From Benjamin Franklin to Thomas Clap, 8 November 1753 (Franklin Papers)
ALS : Yale University Library The first Intimation I find of the New Airpump, is in a Piece of Mr. Watson’s, read to the Royal Society, Feb. 20. 1752 where describing some Experiments he made in Vacuo, he says, “The more compleat the Vacuum, caeteris paribus, the more considerable were the Effects; and here I should not do Justice to real Merit, were I silent in regard to Mr. Smeaton. This...