CHAPTER XIV. MUTUAL AFFINITIES OF ORGANIC BEINGS: MORPHOLOGY -- EMBRYOLOGY -- RUDIMENTARY ORGANS.
5. DEVELOPMENT AND EMBRYOLOGY. (continued)
Thus, as it seems to me, the leading facts in embryology, which are second
to none in importance, are explained on the principle of variations in the
many descendants from some one ancient progenitor, having appeared at a not
very early period of life, and having been inherited at a corresponding
period. Embryology rises greatly in interest, when we look at the embryo
as a picture, more or less obscured, of the progenitor, either in its adult
or larval state, of all the members of the same great class.