The principles of science

by William Stanley Jevons

[58] Treatise on Natural Philosophy, vol. i. p. 6.

[59] Todhunter’s Plane Co-ordinate Geometry, chap. ii. pp. 11–14.

[60] An explanation of this and other technical terms of the old logic will be found in my Elementary Lessons in Logic, Sixth Edition, 1876; Macmillan.

[61] Elementary Lessons in Logic, pp. 67, 79.

[62] Pure Logic, p. 19.

[63] An Outline of the Necessary Laws of Thought, Fifth Ed. p. 161.

[64] Mansel’s Aldrich, p. 103, and Prolegomena Logica, p. 221.

[65] Elements of Logic, Book II. chap. iv. sect. 4.

[66] Aldrich, Artis Logicæ Rudimenta, p. 104.

[67] Examination of Sir W. Hamilton’s Philosophy, pp. 452–454.