. On the theory and practice of midwifery . ere red, and it was obviously a ruptured Graafian vesicle. In the second case,a small circular ragged opening led to a cavity two lines in diameter, the walls of whichwere of a bright red colour. In the fourth, the right ovary had an aperture a line anda half in diameter, leading to a small cavity, with vascular walls. M. Negrier hasgiven an account of similar appearances in the ovaria during menstruation. On theother hand, the recent observations of Dr. Ritchie on this subject seem to have led himto different conclusions—that although such a dischar
. On the theory and practice of midwifery . ere red, and it was obviously a ruptured Graafian vesicle. In the second case,a small circular ragged opening led to a cavity two lines in diameter, the walls of whichwere of a bright red colour. In the fourth, the right ovary had an aperture a line anda half in diameter, leading to a small cavity, with vascular walls. M. Negrier hasgiven an account of similar appearances in the ovaria during menstruation. On theother hand, the recent observations of Dr. Ritchie on this subject seem to have led himto different conclusions—that although such a discharge from the ovisacs takes placemost frequently at the menstrual period, yet that the two occurrences are not necessarilyco-existent, for menstruation may take place without any such rupture; whilst, on theother hand, the maturation and discharge of mature ova may occur in the intervals ofmenstruation, and even at periods of life when that function is not taking place.—(Carpenters Human Physiology.) — Editor. MENSTRUATION. 83 Fig. the menstrual molimen still recurs periodically, c. Because, coincidentwith the commencement and cessation of menstruation, we find correspond-ing organic changes in the ovaries. 2. We find that the ovaries do not contain a definite and limited num-ber of Graafian vesicles, as Haller and others have thought, but a vastassemblage, according to the researches of Dr. Martin Barry, and thenumber of which vesicles may be increased, according to Dr. Ritchie. 3. In the ovaries of women who menstruate regularly, there may beobserved a number of the Graafian vesicles, in different degrees of deve-lopment, from the size of a millet seed to that of a cherry stone. 4. There are cases on record of women who died just before menstru-ating, in one of whose ovaries a vesicle was observed in a state of greatmaturity, enlarged and prominent, with its outer coverings much thinned,semitransparent, and in one point apparently about to burst. 5. In a considerable
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