Taylor’s Scientific Memoirs, vol. ii. p. 333.

Philosophical Transactions, 1873, p. 83.

Taylor’s Scientific Memoirs, vol. ii. pp. 330, 347, &c.

Quetelet, Letters, &c. p. 116.

Baily, Account of Flamsteed, p. 56.

Gould’s Astronomical Journal, Cambridge, Mass., vol. ii. p. 161.

Philadelphia (London, Trübner) 1863. Appendix, vol. ii. p. 558.

Bakerian Lecture, Philosophical Transactions (1868), vol. clviii. p. 6.

Results of Observations at the Cape of Good Hope, p. 283.

The Logic of Chance, an Essay on the Foundations and Province of the Theory of Probability, with especial reference to its Logical Bearings and its Application to Moral and Social Science. (Macmillan), 1876.

Gauss, translated by Bertrand, p. 25.

Jamin, Cours de Physique, vol. ii. p. 60.

Preliminary Discourse on the Study of Natural Philosophy, p. 77.

Lavoisier’s Elements of Chemistry, translated by Kerr, 3rd ed. p. 148.

Babbage, Economy of Manufactures, p. 194.