1Robert Patterson to Thomas Jefferson, 25 August 1815 (Jefferson Papers)
It requires an apology that I have not before now sent you the Time-Piece, which has been so long in my custody. The commencement of the late war before the Time-Piece was finished, & the consequent depredations of the enemy on our coast, prevented its being sent before the restoration of peace. When this event had taken place, I perceived that some parts of the veneering were scaling off from...
2Robert Patterson to Thomas Jefferson, 18 August 1810 (Jefferson Papers)
I am directed, by the Philosophical Society , to acknowledge the reciept (under cover from you) of a paper from M. Du Jareau of New Orleans , on the construction of a saw-mill to be worked by a horse. This paper, according to the usage of the society, was referred to a committee , who have reported, in substance, —That the paper does not appear to be intended by the Author as a communication...
3Robert Patterson to Thomas Jefferson, 10 May 1809 (Jefferson Papers)
My younger son, Robert Maskill , having gone thro the usual course of collegiate studies in our Seminary , and of medical studies under D r Barton , and obtained degrees both in the Arts & in medicine; has devoted the last twelve months chiefly to the study of mineralogy under M r Godon ; in which, it is said, he has made considerable proficiency. He has a strong desire of visiting some parts...
4Robert Patterson to Thomas Jefferson, 25 March 1813 (Jefferson Papers)
Your time-piece has been packed up, ready for shipment, in the manner you directed, for a considerable time. But as soon as our river was had been rendered navigable, by the breaking up of the ice, it was again stoped & still continues to be so, by a British fleet. I am therefore, Sir, about to set it up at my own house, as it will be better to keep it going than standing; & shall wait your...
5Robert Patterson to Thomas Jefferson, 10 January 1812 (Jefferson Papers)
I have rec d & read your interesting communication of the 10 th Nov r with great satisfaction, and have laid the same before the Committee appointed on the subject of your former communication; who, I am sure, will give it that consideration which it so highly merits. In the meantime, Sir, you will permit me to make a few observations, which may not, however perfectly agree with the ideas...
6Robert Patterson to Thomas Jefferson, 11 November 1811 (Jefferson Papers)
Presuming that you may not as yet have seen a little tract, by Doctor Buchanan , on “Christian Researches in Asia ,” lately republished in Boston ; and not doubting that you would find it highly interesting, I have taken the liberty of sending you a copy, of which I most respectfully request your acceptance. Some time ago, inclosed I believe in A Nautical Almanack for the year 1813, I returned...
7Robert Patterson to Thomas Jefferson, 20 June 1816 (Jefferson Papers)
You have no doubt been informed, at least thro the medium of News-papers, of M r Peale ’s complete success in illuminating his Museum with gas - lights , & presuming that it would not be uninteresting to you, I shall do myself the pleasure of giving you a description of his apparatus & process for generating & distributing the gas. It is well known that any substance containing hydrogen will,...
8Robert Patterson to Thomas Jefferson, 23 September 1811 (Jefferson Papers)
Some days ago, I received your favour of the 11 , with the French poem on Astronomy. The Society had rec d a copy of the same work from the Author , & therefore they wish me to return your copy. They have eagerly embraced your proposal respecting the universal standard of weights and measures , and have referred the subject to a Committee who earnestly solicit, not merely your co-operation,...
9Robert Patterson to Thomas Jefferson, 13 December 1816 (Jefferson Papers)
A considerable time ago, you made some enquiries relative to a good clock & watch-maker , who, you suggested, might advantageously settle in your neighbourhood. Neither then, nor since, till the other day, could I hear of one that I could recommend, who was willing to make the trial. From the enclosed letter , you will be able to judge whether the persons therein Recommended by m r Hassler ,...
10Robert Patterson to Thomas Jefferson, 24 October 1815 (Jefferson Papers)
I have been favoured with your letter of the 13 th & shall immediately take measures to send on your Time-piece as you have directed. I have had, for some years an artificial horizon , which, by means of a reflecting sextant, answers the purpose of measuring all altitudes of the sun, or any other visible object, from 0 to 90° as well as all depressions not exceeding 50° with great ease &...
11Robert Patterson to Thomas Jefferson, 30 November 1812 (Jefferson Papers)
At length M r Voigt has finished your timepiece. The delay, notwithstanding repeated solicitations to the contrary, has been shamefully long; for which no apology can be made but the common one among Mechanicks—a great pressure of business. The workmanship, however, appears to be well executed. A week or so will be necessary to regulate the pendulum; after which it shall be shipped for...
12Robert Patterson to Thomas Jefferson, 12 January 1813 (Jefferson Papers)
This day I had prepared to ship your Time-piece &c on board the Happy Return , Capt Hand , for Richmond , to be addressed to M r Gibson , as you direct in your favour of the 27th Ult . But our river is now frozen over, & we must wait for an opening, when the shipment will be made:— The pendulum has a compensating thermometer attached to it; the invention, I believe, of M r Rittenhouse , and...
13Robert Patterson to Thomas Jefferson, 12 March 1811 (Jefferson Papers)
Agreeably to your desire I send herewith Garnetts’ Nautical Almanacs for the years 11. & 12—& shall not fail, life remaining, to forward those for succeeding years as soon as published. I have lately added to the common artificial horizon, (the polished plane surface adjusted by a spirit-level) a very simple appendage, by the aid of which any altitude of the sun &c may be taken, on land, from...
14Robert Patterson to Thomas Jefferson, 6 July 1809 (Jefferson Papers)
I have the pleasure to inform you, that the people of Passamaquoddy are now furnished with a new object of pursuit— gold finding . There was yesterday brought to the Mint , as a deposit, part of a grain or lump of native gold , weighing 14 oz 7¼ grs which was lately found, by a little boy, on Sewards neck beach , in the town(ship) of Eastport , near the mouth of the bay. This piece of gold ,...
15Robert Patterson to Thomas Jefferson, 24 November 1815 (Jefferson Papers)
The Author of this Synopsis (formerly Secretary of Congress) desires me to send you, by this opportunity, a copy of the work, of which he begs your acceptance; & Requests that you would please to favour him with your remarks on the same RC ( MHi ); dateline beneath signature; addressed: “Thomas Jefferson”; endorsed by TJ as received 27 Dec. 1815 “with the clock” and so recorded in SJL ; with...
16Robert Patterson to Thomas Jefferson, 24 April 1813 (Jefferson Papers)
I have to acknowledge the receipt of your esteemed favour of the 8 th . Your time-piece, agreeably to your desire, I have had set up at my own house, & shall with great pleasure make experiments on its going with the rod-pendulum. This pendulum is at present suspended by a few inches of watch-spring attached to the upper end, as in common pendulums: But M r Adrain , an able mathematician, in...
17Robert Patterson to Thomas Jefferson, 28 November 1815 (Jefferson Papers)
A pretty severe attack of the prevailing epidemic, with a good deal of sickness in the family, must be my excuse for not sending on your Time-piece somewhat sooner. It was, however, last saturday shipped on board the Guinea Hen , &, according to your directions, consigned to mess rs Gibson & Jefferson of Richmond. On examining the pendulum mentioned in my last, & which I proposed to substitute...
18Robert Patterson to Thomas Jefferson, 2 December 1815 (Jefferson Papers)
M r Hassler has just transmitted to the Sec’y of the Treasury , a descriptive list of the instruments which, in execution of his appointment for that purpose, he had procured in Europe , & has lately brought with him to this city. Presuming that you might be pleased to have a copy of this list, I herewith send you one, for your acceptance. M r Hassler ’s circumstances are, at present, somewhat...