Natural Law in the Spiritual World

by Henry Drummond

FOOTNOTES:

[52] For the scientific basis of this spiritual law the following works may be consulted:—

"The Origin of Species." By Charles Darwin, F.R.S. London: John Murray. 1872.

"Degeneration." By E. Ray Lankester, F.R.S. London: Macmillan. 1880.

"Der Ursprung der Wirbelthiere und das Princip des Functions Wechsels." Dr. A. Dorhn. Leipzig: 1875.

"Lessons from Nature." By St. George Mivart, F.R.S. London: John Murray. 1876.

"The Natural Conditions of Existence as they Affect Animal Life." Karl Semper. London: C. Kegan Paul & Co. 1881.

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