[17] Vide Foundations of Mathematics, pp. 93-94.

[18] Vide Philosophical Review, Vol. V, 1896, p. 352, et. seq.

[19] Vide Monist, Vol. XVI, 1896, Mathematical Emancipations.

[20] Vide Fourth Dimension, Simply Explained, edited by H. P. Manning, p. 28.

[21] Vide Fourth Dimension, p. 75, C. H. Hinton.

[22] Q. v., p. 242, edited by H. P. Manning.

[23] Vide Science, Vol. VII, 158, 1898, p. 4.

[24] See Fig. 18.

[25] Vide Recherche, Chap. VII, also Philosophical Review, V. 15, p. 401.—Malebranche.

[26] Kathekosis (from Chaos-Theos-Kosmos) is to evolution what "chaogeny" is to involution. It is the end of evolution, but also the beginning of involution, and in the latter function is known as "chaogeny." See diagram No. 17.