1[From Thomas Jefferson to Jan Ingenhousz, 14 July 1785] (Jefferson Papers)
[ Paris, 14 July 1785. Entry in SJL reads: “Monsr. Ingenhausz medecin de la cour & c. & c. à Vienne. Inclosing Dr. Franklin’s letter. Count Merci.” Not found.]
2From Benjamin Franklin to Jan Ingenhousz, 23 April 1784 (Franklin Papers)
ALS : Myron Kaller & Associates, Inc., Asbury Park, New Jersey (1989) I did intend to have written you a long Letter by the good Bishop, but cannot now accomplish it.— You will however have it very soon.— Fearing that the Seeds for your Friend might not arrive in time, to be planted this Spring, and having received a Box for some of my Acquaintance here, I sent a Part to you, to be dispos’d of...
3From Benjamin Franklin to Jan Ingenhousz, 26 April 1777 (Franklin Papers)
ALS : Henry Huntington Library I find by your Favour of the 2d Inst. that my Letter to you had been stopt in the Post Office. I am sorry I omitted Payment of the Postage; it was thro’ Ignorance. As you mention having order’d your Banker to forward it, I hope you have it before this time. I shall take care of this. It is probable that I shall remain here still some Months, so that if you...
4From Thomas Jefferson to Jan Ingenhousz, 9 July 1787 (Jefferson Papers)
An absence of three or four months on a journey through the Southern parts of France and Northern of Italy, has prevented my acknowleging earlier the receipt of your favor of Dec. 28. together with the pamphlet received through Barrois, for which I beg the author to accept my sincere thanks. Any letters or parcels from yourself to Doctr. Franklin, if you will do me the honor of addressing them...
5From Thomas Jefferson to Jan Ingenhousz, 19 June 1788 (Jefferson Papers)
I am late in answering your favor of Jan. 23. but it has not been possible for me to do it sooner . The letter to Doctor Franklin, after which you enquire, came to my hands on the 9th. of October. I sent it under cover with my own dispatches to our Secretary for foreign affairs at New York, and the Count de Moutier , who went minister from this country to America, was the bearer of it . His...
6From Thomas Jefferson to Jan Ingenhousz, 14 July 1785 (Jefferson Papers)
Doctor Franklin left us two days ago. On his departure he charged me with the inclosed packet to be forwarded to you. His commands will justify the liberty I take of accompanying them with a line, and with assurances of the satisfaction it affords me to do this to a person to whose researches the lovers of science are so much indebted. I have the honour to be with sentiments of the highest...
7From Benjamin Franklin to Jan Ingenhousz, 12 February[–6 March 1777] (Franklin Papers)
ALS : Yale University Library; incomplete draft and copy: Library of Congress I received your kind Letter on the 4th of Jany. It gave me great Pleasure, as it inform’d me of your Welfare, and of the Continuance of your Friendship, which I highly value. If his Imperial Majesty’s Journey to France is only postponed, and not entirely laid aside, I hope I may still have the Happiness of seeing...
8From Benjamin Franklin to Jan Ingenhousz, 30 September 1773 (Franklin Papers)
ALS (letterbook draft): American Philosophical Society I rejoic’d as much as any Friend could do, at the News we receiv’d here from time to time of your Successes in your Profession, and of the safe Recovery of your illustrious Patients of that most amiable Family: But it griev’d us all at the same time to hear that you did not yourself enjoy Health in that Country. Surely their known Goodness...
9From Benjamin Franklin to Jan Ingenhousz, 16 May 1783 (Franklin Papers)
LS and incomplete AL (draft): Library of Congress I have before me your three Favours of Feby. 26, April 4. & 29. the last delivered to me yesterday by Mr. Robertson to whom I shall show the Respect due to your Recommendation. I am asham’d of being so long in Arrear in my Correspondence with you, but I have too much Business. I will now endeavour to answer your Letters, & hope I may be able to...
10From Benjamin Franklin to Jan Ingenhousz, 18 March 1774 (Franklin Papers)
ALS : Harvard University Library I have lately been favoured with yours of the 24th past. I am very sensible of your Kindness in the Concern you express on Account of the late Attack on my Character before the Privy Council and in the Papers. Be assured, my good Friend, that I have done nothing unjustifiable, nothing but what is consistent with the Man of Honour, and with my Duty to my King...
11From Benjamin Franklin to Ingenhousz, 2 October 1781[–21 June 1782] (Franklin Papers)
AL (draft) and LS : Library of Congress It is a long time, my dear Friend, since I have had the Pleasure of writing to you. I have postpon’d it too often, from a Desire of writing a good deal on various Subjects, which I could not find sufficient time to think of properly: Your Experiments on the Conducting of Heat was one Subject; the finishing my Remarks on the Stroke of lightning in Italy...
12From Benjamin Franklin to Ingenhousz, 24 December 1783 (Franklin Papers)
ALS : Yale University Library I am greatly indebted to you for Letters. I shall write largely to you soon. With this I send you some American Papers, more Letters to Sir Jos. Banks, A Letter to Mr Nairne on Thermometers, & some Catalogues of Seeds.— I have sent the Order to America for Seeds which your Friend desired, but I fear the Vessel I sent it by is lost, not being arriv’d the 6th of...
13From Benjamin Franklin to Ingenhousz, 2 September 1783 (Franklin Papers)
ALS : Mrs. James A. de Rothschild, England (1962) Inclos’d I send you a Copy of a Letter to Sir Joseph Banks, concerning the Ballons that at present occasion much Conversation here. I imagine that if you make one, and fill it with inflammable Air, you will contrive to fire it by Electricity when it is up, and by that means match in Report the Thunder of Nature. To morrow is to be signed our...
14From Benjamin Franklin to Ingenhousz, [21 June 1782] (Franklin Papers)
AL (draft), press copy of L , and copy: Library of Congress An Attempt to explain the Effects of Lightning on the Vane of the Steeple of a Church in Cremona , August 1777. Address’d to Dr John Ingenhauss, C. & Archiat. Cæs. &c &c I have taken the Acct. of this Stroke of Lightning from an Italian Piece, intitled, Analisi d’un nuovo Fenomeno del Fulmine , the Dedication of which is subscribed...
15From Benjamin Franklin to Ingenhousz, 16 January 1784 (Franklin Papers)
ALS : New York Public Library; copy: Library of Congress I have this Day received your Favour of the 2d Instant. Every Information in my Power respecting the Balloons I sent you just before Christmas, contain’d in Copies of my Letters to Sir Joseph Banks. There is no Secret in the Affair, and I make no doubt that a Person coming from you would easily obtain a Sight of the different Balloons of...
16From Benjamin Franklin to Ingenhousz, 22 November 1779 (Franklin Papers)
Copy: Library of Congress I received yours of the 18th. and see with great Pleasure that you have been able to break the Enchantment that fix’d you so long in England, and have once more set foot on the continent with intent to visit Paris. You may be assured of meeting the Same kind Welcome at Mr De Chaumonts and I have besides a Bed &c. at your service if you Should rather chuse to be with...
17From Benjamin Franklin to Ingenhousz, 1 June 1783 (Franklin Papers)
ALS : American Philosophical Society This will be delivered to you by an ingenious young Friend of mine, Mr. S. Vaughan, who travels with a View of improving himself in Mineralogy. He will be much oblig’d by the Informations & Counsels that you can give him; and as I have a great Regard for him, and for his Family, I earnestly recommend him to those Civilities which you are accustomed to show...
18From Benjamin Franklin to Ingenhousz, 4[–5] May 1779 (Franklin Papers)
LS : American Philosophical Society I received your kind Letter of last Month, and I forwarded that Part of it, which related to Mr: Williams. Inclosed you have his Answer. I shall be glad to see those Papers of yours which you tell me will be in the Transactions, or indeed any thing of your Writing. By the way, mentioning the Transactions puts me in mind that I have received none of the...