[13] Liddon’s “Life of E. B. Pusey” (1893), p. 219.
[14] For this information and many particulars of this transaction I am indebted to Dr. J. H. Gladstone, F.R.S.
[15] “It was probably in a four-wheeled velocipede that Faraday was accustomed, some thirty years ago, to work his way up and down the steep roads near Hampstead and Highgate. This machine appears to have been of his own construction, and was worked by levers and a crank axle in the same manner as the rest of the four-wheeled class.”—The Velocipede: its past, its present, and its future. By J. F. B. Firth. London, 1869.
[16] Except on nickel and cobalt, which are also para-magnetic metals.
[17] For a graphic account by Hansteen of the circumstances of Oersted’s discovery, see Bence Jones’s “Life and Letters of Faraday,” vol. ii. p. 390.
[18] “To the effect which takes place in this conductor [or uniting wire] and in the surrounding space, we shall give the name of the conflict of electricity.”...
“From the preceding facts we may likewise collect that this conflict performs circles; for without this condition, it seems impossible that the one part of the uniting wire, when placed below the magnetic pole, should drive it towards the east, and when placed above it towards the west; for it is the nature of a circle that the motions in opposite parts should have an opposite direction.”—H. C. Oersted, Ann. of Phil., Oct., 1820, pp. 273–276.
[19] This is an error due to haste in writing.
[20] See a paper by the author in the Philosophical Magazine for June, 1895, entitled “Note on a Neglected Experiment of Ampère.”