1To Thomas Jefferson from Robert Patterson, 12 April 1802 (Jefferson Papers)
I have been honored with your favour of the 22d Ult. and feel, with a lively sense, the obligation I am under for the interest you were pleased to take in behalf of my friend, though the appointment has fallen on another worthy gentleman of the same name. I am not a little flattered with the notice you have taken of my cypher—Your alteration will certainly very much facilitate the labour of...
2To Thomas Jefferson from Robert Patterson, 17 April 1802 (Jefferson Papers)
I had the honour, a few days ago , of mentioning to you an interesting experiment which Mr. R. Peale had exhibited before a number of citizens; namely, the depuration of foul or putrid water, by simple filtration through sponge, sand, & charcoal;—that he had also succeeded in an attempt to render salt water fresh, and that he was preparing to make the experiment with true sea-water—He has this...
3To Thomas Jefferson from Robert Patterson, 24 April 1802 (Jefferson Papers)
Agreeably to the directions in your favour of the 17th I am getting a stand made for the sextant , and the whole will be carefully packed up, and, by Mr. Roberts, sent on, by water, in the course of a few days. With respect to the cypher, when applied to a single word or line, I would observe, that in strict conformity with the general system, each letter must, in this case, be considered as a...