Faraday to Francis Watkins   25 November 1833

R Institution | Nov 25 1833

Dear Sir

I first obtained the spark with a common magnet (i.e. Dr Knights1) at Woolwich 8 Feby 1832 and next day i.e. on the 9th from Mr Daniells loadstone2[.] The original spark is referred to in my first paper of date Nov 18313[.]

I do not recollect seeing any paper of Pixiis4 of the kind you mention5[.] I purpose borrowing of you the revolving apparatus & a Saxtons magnet for next Saturdays lecture if you can lend me one6[.]

I am Dear Sir | Very Sincerely Yours | M. Faraday

Mr Watkins


Endorsement: Pixii first made instruments for

Academie de Bordeauxe [sic] Science of Paris

for a private gentleman[.]

Small soft iron magnet wt. 8oz took 34lbs - 3 coils. 30 jars[.]

Gowin Knight (1713-1772, DNB). Librarian at the British Museum. Worked on compasses.
See Faraday, Diary, 8 and 9 February 1832, 1: 423-7. But see note 4, letter 581 for problems with these dates.
Faraday (1832a), ERE1, 32.
Hippolyte Pixii. Parisian scientific instrument maker. See Gee (1993), 103-8.
But see Anon (1832) and Ampère (1832) which contain descriptions of Pixii's apparatus.
See "National Gallery of Practical Science, Adelaide Street", Lit.Gaz., 16 November 1833, p. 730 for Faraday's presence, on 14 November 1833, at a demonstration of Pixii's and Saxton's machines.

Bibliography

ANON (1832): “Nouvelle construction d'une Machine électro-magnétique”, Ann. Chim., 50: 322-4.

FARADAY, Michael (1832a): “Experimental Researches in Electricity. On the Induction of Electric Currents. On the Evolution of Electricity from Magnetism. On a new Electrical Condition of Matter. On Arago's Magnetic Phenomena”, Phil. Trans., 122: 125-62.

GEE, Brian (1993): “The Early Development of the Magneto-Electric Machine”, Ann. Sci., 50: 101-33.

Please cite as “Faraday0692,” in Ɛpsilon: The Michael Faraday Collection accessed on 27 April 2024, https://epsilon.ac.uk/view/faraday/letters/Faraday0692