The principles of science

by William Stanley Jevons

[108] Works, edited by Shaw, vol. i. pp. 141–145, quoted in Rees’s Encyclopædia, art. Cipher.

[109] Nature, vol. i. p. 553.

[110] Formal Logic, p. 172.

[111] Philosophical Magazine, 4th Series, vol. i. p. 355.

[112] Transactions of the Royal Society of Edinburgh, vol. xxi. part 4.

[113] Philosophical Magazine, 4th Series, vol. vii. p. 465; vol. viii. p. 91.

[114] Memoirs of the Manchester Literary and Philosophical Society, 3rd Series, vol. iv. p. 347.

[115] Letters on the Theory of Probabilities, translated by Downes, 1849, pp. 36, 37.

[116] Encyclopædia Metropolitana, art. Probabilities, p. 396.

[117] Elements of Logic, Book III. sections 11 and 18.