. Diseases of women. A clinical guide to their diagnosis and treatment. epancies come from the difficulty ofgetting gooa material foi observation. He*althy human uterican only be got so lon<. after death that it is doubtful whetherminute changes are physiological or post-mortem An inverteduterus can hardly be taken as a type of health. Uteri removedduring life by persons competent to examine them are alwaysdiseased. The condition of the whole endometrium cannotbe correctly inferred from a little bit detached by a only observations free from these sources of error arethose made o
. Diseases of women. A clinical guide to their diagnosis and treatment. epancies come from the difficulty ofgetting gooa material foi observation. He*althy human uterican only be got so lon<. after death that it is doubtful whetherminute changes are physiological or post-mortem An inverteduterus can hardly be taken as a type of health. Uteri removedduring life by persons competent to examine them are alwaysdiseased. The condition of the whole endometrium cannotbe correctly inferred from a little bit detached by a only observations free from these sources of error arethose made on animals. Mr. Walter Heape* has observedthe changes in the uterus during the menstruation of * Phil. Trans., vol. clxxxv., 1894, B., pp. 411—471. MENSTRUATION. 515 semnopithecus entellus. He finds that the cycle of change isthis: starting Iroin a period of rest, that is, a time shortlyafter menstruation, there is first growth of the interglandulartissue; then growth of the vessels; then congestion; thensmall extravasations of blood; then these small extravasations. Fig. 156.—Uterus threedays after menstrualflow has ceased. Theshaded part repre-sents the renewedmucous membrane. Fig. 157.—Uterus a weekafter menstrual flowhas ceased. The shadedpart as in Fig. 156. Fig. 158.—Uterus just beforemenstruation. The shadedpart represents mucousmembrane. {After Sir John Williams, Obstetrical Journal, Nov., 1875.) become blended together into large lacunar; then these lacunaeburst, and blood escapes into the uterine cavity, the endo-metrium being torn away by the rush of blood. Afterwardsthere is regeneration of the endometrium from the embryonictissue of which it is composed, the undifferentiated cells ofthis tissue being able to form epithelium, glands, and vessels. Now, if this account of what takes place in the monkey becompared with the observations of those who have examinedthe whole uterus, and not merely scrapings, in the humanfemale (Kundrat and Engelmann, Sir J. Williams
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