[27] See The Germ Plasm; A Theory of Heredity, by A. Weissman.
[28] Figure 20.
[29] See pp. 338, 341.
[30] See Unknown, p. 485, et. seq.
[31] Rosicrucian Cosmo-Conception, p. 477, Max Heindel
[32] Foundations of Mathematics, p. 90.
Transcriber's Notes
Variations in spelling, punctuation and hyphenation have been retained except in obvious cases of typographical errors. Inconsistencies between the text and index have been resolved in favour of the text.
Duplication of the sub title (The Mystery of Space) betwen the table of contents and the introduction has been removed.