Note 15 — Chapter II · LIFE AT THE ROYAL INSTITUTION.

“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.