56 THE ORIGIN OF SPECIES IL 
ages. The other formations not uncommonly 
exhibit 60, 80, or even 94 per cent. of genera in 
common with those whose remains are imbedded 
in their predecessor. Not only is this true, but 
the subdivisions of each formation exhibit new _ 
species characteristic of, and found only in, them; _ 
and, in many cases, as in the lias for example, the _ 
separate beds of these subdivisions are distin- 
guished by well-marked and peculiar forms of life. _ 
A section, a hundred feet thick, will exhibit, at 
different heights, a dozen species of ammonite, 
none of which passes beyond its particular zone — 
of limestone, or clay, into the zone below it or into 
that above it; so that those who adopt the doc-~ 
trine of special creation must be prepared to admit, — 
that at intervals of time, corresponding with the 
thickness of these beds, the Creator thought fit — 
to interfere with the natural course of events for 
the purpose of making a new ammonite. It is 
not easy to transplant oneself into the frame of d 
mind of those who can accept such a conclusion — 
as this, on any evidence short of absolute demon- 
stration; and it is difficult to see what is to be 
gained by so doing, .since, as we have said, it is 
obvious that such a view of the origin of living 
beings is utterly opposed to the Hebrew cos- 
mogony. Deserving no aid from the powerful — 
arm of Bibliolatry, then, does the received form of 
the hypothesis of special creation derive any | 
support from science or sound logic? Assuredly 
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