119 
of wings in the air, that of the second by a corresponding 
movement of fins in the water; whereas mammalia are com- 
pletely destitute of either. We do not mean to say that it 
needed any discoveries of modern science to point out this 
amount of correlation and distinction between these orders of 
creation. I mention them only as introducing another fact 
which has recently been ascertained, and which throws much 
additional light upon the subject. The late Dr. Prevost, a 
celebrated anatomist of Geneva, some years ago startled the 
scientific world by the results of his experiments upon the blood 
of birds and fishes, as compared with the blood of mammals ; 
by which he showed, beyond all doubt, that the globules of 
blood in the two former were identical, whereas the globules of 
blood in the latter were perfectly distinct. And again, Pro- 
fessor Huxley, in some of his communications to the Geological 
Society, has adduced certain carious evidences of affinity between 
birds and the Dinosaurian reptiles. 
22. Now, putting these facts together, I call your attention 
to the very remarkable manner in which they coincide with the 
teaching of Scripture, in Gen. i. 20, compared with v. 24. In 
the first of these verses we have a picture drawn of the vivifi- 
cation of the waters, out of which there arises a twofold order 
of aquatic and aerial creations. “ And God said, let the waters 
bring forth abundantly the moving creature that hath life, and 
fowl that may fly above the earth in the open firmament of 
heaven.” From which language, even if we had no science, we 
might reasonably infer that fishes and birds were correlated both 
as to origin and physiology. Afterwards, speaking of a separate 
and distinct department of creational construction, we have the 
following words : — “And God said, let the earth bring forth the 
living creature after his kind, cattle and creeping thing, and 
beast of the earth, after his kind.” Thus the language of this 
passage is so far the language of natural philosophy ; inasmuch 
as it traces a physiological distinction between the origin of 
mammals and those of birds and fishes. True, it is not couched 
in scientific phraseology, nevertheless its teaching is perfectly 
coincident with science, even when science is traced up to its 
latest discoveries. 
23. Let us now pass to some of the last and most interesting 
revelations of modern astronomy. Here, however, instead of 
using my own words, I prefer quoting from a valuable little 
work which has lately been published by a Cambridge mathe- 
matician.* He is speaking of the question as to whether the 
* The Romance of Astronomy, by R. K. Miller; to which the author of this 
paper is indebted for one or two thoughts on § 11. 
