11To Thomas Jefferson from Jean Baptiste Le Roy, 28 September 1786 (Jefferson Papers)
Je me proposois Monsieur d’avoir L’honneur de vous voir pour vous demander quelques éclaircissemens sur un fait que M. Le Chevalier de Chatelux rapporte dans son voyage de L’amèrique Septentrionale et qu’il dit tenir de vous. Mais etant obligé d’aller à La Campagne J’ai espèré que vous me pardonneriez de vous en écrire, et que vous voudriez bien avoir la bonté de satisfaire à ce Sujet ma...
12From Thomas Jefferson to Jean Baptiste Le Roy, 13 November 1786 (Jefferson Papers)
I received the honour of yours of Sep. 18. a day or two after the accident of a dislocated wrist had disabled me from writing. I have waited thus long in constant hope of recovering it’s use. But finding that this hope walks before me like my shadow, I can no longer oppose the desire and duty of answering your polite and learned letter. I therefore employ my left hand in the office of scribe,...
13From Thomas Jefferson to Jean Baptiste LeRoy, 3 April 1789 (Jefferson Papers)
I return you with many thanks the Volume with D. Bernoulli’s paper which I have read with great satisfaction. I observe that the proposition of M. Bernoulli differs from Mr. Rumsey’s in several essential points. 1. His Water was to be raised by man: Rumsey’s by elastic vapour. 2. Bernoulli ’s water was to act on an inclined plane: Rumsey’s on a direct one. 3. Bernoulli ’s was to act by it’s...