His grounds of belief and
treatment of the subject are wholly different from mine; but as Dr. Freke
has now (1861) published his Essay on the "Origin of Species by means of
Organic Affinity", the difficult attempt to give any idea of his views
would be superfluous on my part.
Mr. Herbert Spencer, in an Essay (originally published in the "Leader",
March, 1852, and republished in his "Essays", in 1858), has contrasted the
theories of the Creation and the Development of organic beings with
remarkable skill and force. He argues from the analogy of domestic
productions, from the changes which the embryos of many species undergo,
from the difficulty of distinguishing species and varieties, and from the
principle of general gradation, that species have been modified; and he
attributes the modification to the change of circumstances. The author
(1855) has also treated Psychology on the principle of the necessary
acquirement of each mental power and capacity by gradation.
In 1852 M. Naudin, a distinguished botanist, expressly stated, in an
admirable paper on the Origin of Species ("Revue Horticole", page 102;
since partly republished in the "Nouvelles Archives du Museum", tom. i,
page 171), his belief that species are formed in an analogous manner as
varieties are under cultivation; and the latter process he attributes to
man's power of selection. But he does not show how selection acts under
nature.
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