11From Benjamin Franklin to Peter Collinson, 29 July 1750 (Franklin Papers)
Copy: American Academy of Arts and Sciences As you first put us on Electrical Experiments by sending to our Library-Company a Tube with Directions how to use it; and as our honourable Proprietor enabled us to carry those Experiments to a greater Height, by his generous Present of a complete Electrical Apparatus; ’Tis fit that both should know from Time to Time what Progress we make. It was in...
12From Benjamin Franklin to Peter Collinson, 4 February 1751 (Franklin Papers)
ALS : The Royal Society I receiv’d yours of Oct. 4. via New England, with the Account of what you have laid out on Books and Mathematical Instruments for the Academy, by which I perceive there is but about £20 in your Hands, much too little, I fear, for the Philosophical Apparatus! and the Misfortune is, that our other Expences in purchasing, Building, &c. are like to pinch us so in the...
13From Benjamin Franklin to Peter Collinson, 21 May 1751 (Franklin Papers)
ALS : Pierpont Morgan Library Budden is arrived, and every thing you sent per him come safe to hand. Both the Library-Company and the Academy are exceedingly oblig’d to you, and would be glad of any Opportunity of serving you or any of your Friends. The Academy goes on as one could wish: We have excellent Masters, and the Boys improve surprizingly: The Number now 70 and daily encreasing. I...
14From Benjamin Franklin to Peter Collinson, 29 June 1751 (Franklin Papers)
Copy: The Royal Society In Capt. Waddels Account *Ph. Tr. No. 492. p. III . of the Effects of Lightning on his Ship, I could not but take Notice of the large Comazants (as he Calls them,) that settled on the Spintles at the Topmast-Heads, and burnt like very large Torches before the Stroke. According to my Opinion, the Electrical Fire was then drawing off, as by Points , from the Cloud, the...
15From Benjamin Franklin to Peter Collinson, [October 1752] (Franklin Papers)
Printed in Benjamin Franklin, Supplemental Experiments and Observations on Electricity, Part II . … (London, 1753), pp. 108–[9]. (Yale University Library) As you tell me our friend Cave is about to add some later experiments to my pamphlet, with the Errata , I send a coppy of a letter from Dr. Colden which may help to fill a few pages; also my kite experiment in the Pennsylvania Gazette: to...
16From Benjamin Franklin to Peter Collinson, 1752 (Franklin Papers)
Printed in Benjamin Franklin, Experiments and Observations on Electricity (London, 1769), pp. 350–4; also draft (fragment): American Philosophical Society. The earliest surviving reference to Franklin’s magic squares and circles is in a letter from James Logan, January 12, 1750 (see above, III , 458), asking him to bring copies of his work to Stenton. Actually, Franklin had first contrived...
17From Benjamin Franklin to Peter Collinson, 1752 (Franklin Papers)
I. MS not found; printed in Benjamin Franklin, Experiments and Observations on Electricity (London, 1769), pp. 354–6. II. MS not found; facsimile: Royal Society; also draft: American Philosophical Society. Of Franklin’s magic square James Ferguson wrote that it went “far beyond any thing of the kind I ever saw before; and the magic circle (which is the first of the kind I ever heard of, or...
18From Benjamin Franklin to Peter Collinson, 9 May 1753 (Franklin Papers)
Copy: New York Public Library; also copies: Public Record Office, American Philosophical Society, and (part only) British Museum Although this is one of Franklin’s most important letters, there has been difficulty about both its date and its recipient. Moreover, it has never been printed accurately, nor can it be here, for no Franklin autograph has been found. The two fullest surviving...
19From Benjamin Franklin to Peter Collinson, 26 June 1753 (Franklin Papers)
ALS : Huntington Library I received a Letter from you on the Road hither, with one of the supplemental Papers on Electricity; and a Letter from our Friend Kalm. I condole with you sincerely on the Death of good Mrs. Collinson: I do not, however, offer to comfort you by Arguments drawn from Philosophy or Religion; such will readily occur to a Person of your Understanding and Piety. Natural...
20From Benjamin Franklin to Peter Collinson, September 1753 (Franklin Papers)
Copy: Massachusetts Historical Society In my former Paper on this Subject, wrote first in 1747, enlarged and sent to England in 1749, I considered the Sea as the grand source of Lightning, imagining its luminous Appearance to be owing to Electric Fire, produced by Friction between the Particles of Water and those of Salt. Living far from the Sea I had then no opportunity of making Experiments...