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(1) (p. 274). A letter from M. Dufay, F.R.S. and of the Royal Academy of Sciences at Paris, etc., in the Phil. Trans. of the Royal Soc., vol. XXXVIII., pp. 258-265.
(2) (p. 282). Dean von Kleist, in the Danzick Memoirs, Vol. I., p. 407. From Joseph Priestley's History of Electricity, London, 1775, pp. 83, 84.
(3) (p. 288). Benjamin Franklin, New Experiments and Observations on Electricity, London, 1760, pp. 107, 108.
(4) (p. 291). Franklin, op. cit., pp. 62, 63.
(5) (p. 295). Franklin, op. cit., pp. 107, 108.
(For notes and bibliography to vol. II. see vol. V.)