[88] British Quarterly Review, No. lxxxvii, July 1866.
[89] Mind, October 1876, vol. i. p. 484.
[90] Pure Logic, Appendix, p. 82, § 192.
[91] Elementary Lessons in Logic (Macmillan), p. 123. It is pointed out in the preface to this Second Edition, that the views here given were partially stated by Leibnitz.
[92] Syllabus of a Proposed System of Logic, p. 29.
[93] It has been pointed out to me by Mr. C. J. Monroe, that section 14 (p. 339) of this paper is erroneous, and ought to be cancelled. The problem concerning the number of paupers illustrates the answer which should have been obtained. Mr. A. J. Ellis, F.R.S., had previously observed that my solution in the paper of De Morgan’s problem about “men in the house” did not answer the conditions intended by De Morgan, and I therefore give in the text a more satisfactory solution.
[94] Montucla, Histoire, &c., vol. iii. p. 388.
[95] Wallis, Of Combinations, &c., p. 119.
[96] James Bernoulli, De Arte Conjectandi, translated by Baron Maseres. London, 1795, pp. 35, 36.
[97] Arithmeticæ Theoria. Ed. Amsterd. 1704. p. 517.