Abstract
The exertions of the most acute and skilful anatomists have hitherto failed, to explore the process of generation in the quadruped, fully to its origin: I think I may assert, they have ascertained that the embryo comes from the ovarium, and is deposited in the uterus, where it acquires a visible form; but the state in which it leaves the ovarium, the changes it under­goes in the fallopian tube, and its appearance when received by the uterus, are hitherto altogether unknown. Although we are obliged to confess ourselves ignorant of many things respecting the commencement of generation, the progress of the young from its first visible appearance till it acquires a perfect form, has been very accurately traced; but this may be considered as more properly belonging to the œconomy of the young than to the history of generation itself.

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