3. “On the Structure of the Mammalian Ovum,” by Professor T. J. Parker, F.R.S.

The author states that sections of the ovary of a kitten recently prepared for class purposes in the Biological Laboratory exhibit the unusual character of a number (six or eight) of nuclear bodies in the vitellus. Each is globular, about 0.01mm. in diameter, and consists of a cortical and a medullary substance, taking on slightly different tints with borax-carmine. They are apparently germinal spots, which have passed from the germinal vesicle into the vitellum—a phenomenon which has been described by His in fishes, and by others in Myria-pods and Ascidians. The germinal vesicle contains, as usual, a single germinal spot.