Footnotes to Chapter 5

(1) Buff finds the quantity of electricity associated with

one milligramme of hydrogen in water to be equal to 45,480

charges of a Leyden jar, with a height of 480 millimetres,

and a diameter of 160 millimetres.  Weber and Kohlrausch

have calculated that, if the quantity of electricity

associated with one milligramme of hydrogen in water were

diffused over a cloud at a height of 1000 metres above the

earth, it would exert upon an equal quantity of the opposite

electricity at the earth's surface an attractive force of

2,268,000 kilogrammes.  (Electrolytische Maasbestimmungen,

1856, p. 262.)

(2) Faraday, sa Vie et ses Travaux, p. 20.