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Updated: May 2, 2025
Plant Migration and Interglacial Periods. Among the leading propositions laid down by Arthur Renfrey, Esq., F.R.S. etc., etc., in the able article prepared by him for "The Physical Atlas of Natural Phenomena," by Alexander Keith Johnston, Edinburg Edition, 1856, on "The Geographical Distribution of the most Important Plants Yielding Food," are the following:
Renfrey, that "each species of plant and animal was created but once in time and place," and that its present diffusion is the result of its "own law of reproduction under the favorable or restrictive influences of laws external to it."
Renfrey, that they were specifically created at one time and place only, whether in pairs, tens, twenties, or hundreds, is neither a rational one, nor has it any experience-argument or scientific authority on which to stand.
Arthur Renfrey before them, with the warm temperate zone north accurately laid down in its proper isotherms, as well as the different classes of vegetation peculiar to the two regions referred to, and some general conclusions of value to science might have been drawn therefrom. Besides, the fact of these similar antipodal flora was well known to many of them before this chart was issued.
Renfrey gives us further statistics of great value respecting these several plant zones of the globe, all of which fit so admirably into our theory of plant-distribution, that we can hardly see how the most prejudiced mind can resist the force of its application.
Arthur Renfrey, and those who accept his scientific formulA|, must insist that this most beautiful of all our ferns was such a "favorite child of nature" that she condescended to create it twice "in time and place," instead of only once. It is a poor rule, they may say, that has no exceptions in phenomenal manifestation.
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