[328] Inquiry into the Nature of Heat, p. 95.

[329] Herschel, Preliminary Discourse, p. 161.

[330] System of Logic, bk. iii. chap. viii. § 4, 5th ed. vol. i. p. 433.

[331] Essayes of Natural Experiments made in the Accademia del Cimento. Englished by Richard Waller, 1684, p. 40, &c.

[332] Plateau, Taylor’s Scientific Memoirs, vol. iv. pp. 16–43.

[333] Philosophical Transactions [1826], vol. cxvi. pp. 388, 389. Works of Sir Humphry Davy, vol. v. pp. 1–12.

[334] National Review, July, 1861, p. 13.

[335] His published works are contained in The Edinburgh Physical and Literary Essays, vol. ii. p. 34; Philosophical Transactions [1753], vol. xlviii. p. 261; see also Morgan’s Papers in Philosophical Transactions [1785], vol. lxxv. p. 190.

[336] Edinburgh Journal of Science, vol. v. p. 79.

[337] Encyclopædia Metropolitana, art. Light, § 524; Herschel’s Familiar Lectures, p. 266.