Note 9 — STRUCTURE, FUNCTIONS, AND DISEASES, OF THE FEMALE ORGANS OF GENERATION.
Reading edition
Instances of different conceptions following connexion at brief intervals are of occasional occurrence.
A case is recorded of a negress having brought forth a negro and a mulatto child, and who confessed having received the embraces of a white and a negro the same evening. Drs. Dewees of Philadelphia, and Francis of New York, adduce similar instances.