[65] "First Principles," Part I, Chap. V, § 31, p. 108.

[66] Part II, Book I, Chap. II.

[67] N. Y., 1889, pp. 62-63.

[68] Pp. 68-69.

[69] P. 70.

[70] Pp. 71 and 72.

[71] Chap. III, p. 75.

[72] "Seeing and Thinking," London, Macmillan & Co., 1879.

[73] Professor Clifford has used the word number in two senses, a quantitative and a qualitative. By number in the latter sense he means simply unlimited units.

[74] Ueberweg, Hist. of Philos., Vol. I, § 20. N. Y., 1877, pp. 57-58.