Graphic illustrations of abortion and the diseases of menstruation / Consisting of Twelve Plates from Drawings Engraved on Stone, and Coloured by Mr. J. Perry, and Two Copper-plates from the Philosophical Transactions, Coloured by the Same Artist. the Whole Representing Forty-five Specimens of Aborted Ova and Adventitious Productions of the Uterus, With Preliminary Observations, Explanations of the Figures and Remarks, Anatomical and Physiological.

by A. B. Granville

Fig. 1. Ovulum bigeminum lanuginosum.

(Four weeks after menstruation.)

This twin Ovulum has lost its outer shell or cortex, within which it originally made its way from the Ovarium into the womb.

The mossy or filiform vessels which, like an efflorescence, surround the present surface of the Ovulum, are, as yet, deprived of that extremely delicate membrane, which at a more advanced period of utero-gestation will cover them, and dipping amongst them, (after the fashion of the inner membranous envelope of the brain,) will separate them into vascular groups or cotyledons, having a single principal trunk in each, and many short and tortuous branches besides, constituting the placenta.

The slit visible in one part of the Ovulum leads to a small cavity from which the embryo escaped. In the second cavity to the left, which is still intact, the embryo is visible when the Ovulum is placed before a strong light.