[268] On the Theory of Errors of Observations, Cambridge Philosophical Transactions, vol. x. Part ii. 416.

[269] Thomson and Tait, Treatise on Natural Philosophy, vol. i. p. 394.

[270] Essai Philosophique sur les Probabilités, pp. 49, 50.

[271] Grant, History of Physical Astronomy, p. 163.

[272] Gauss, Taylor’s Scientific Memoirs, vol. ii. p. 43, &c.

[273] Proceedings of the Royal Society, vol. xviii. p. 159 (Jan. 13, 1870). Philosophical Magazine (4th Series), vol. xxxix. p. 376.

[274] Airy On Tides and Waves, Encycl. Metrop. pp. 364*-366*.

[275] Outlines of Astronomy, 4th edition, § 538.

[276] Philosophical Magazine, 3rd Series, vol. xxxvii. p. 324.

[277] Letters on the Theory of Probabilities, by Quetelet, translated by O. G. Downes, Notes to Letter XXVI. pp. 286–295.