Practical midwifery; handbook of treatment . n, but recent observations tendto show that ovulation may be and probably usually is, entirelyindependent of menstruation, and that impregnation may conse-quently occur in any part of the menstrual month. A very strong argument in support of this view may be drawn PREGNANCY. 15 from clinical observation of the fecundity of the Jewish race; itbeing well known that Jewesses almost invariablj observe to thisday the directions of the Mosaic law which forljade connectionuntil after the bath of purification, a ceremony which is observedupon the seventh da
Practical midwifery; handbook of treatment . n, but recent observations tendto show that ovulation may be and probably usually is, entirelyindependent of menstruation, and that impregnation may conse-quently occur in any part of the menstrual month. A very strong argument in support of this view may be drawn PREGNANCY. 15 from clinical observation of the fecundity of the Jewish race; itbeing well known that Jewesses almost invariablj observe to thisday the directions of the Mosaic law which forljade connectionuntil after the bath of purification, a ceremony which is observedupon the seventh day after the cessation of the menstrual is, moreover, fixed by the Mosaic law as lasting atleast five days; so that Jewish women are restrained from con-nection during at least twelve days of the twenty-eight, and incases of jirofuse menstruation, of couise possibly much longer;notwithstanding which fact the fertility of the race is a matter ofproverbial knowledge. The possibility that conception may not have occurred until. Fig. 1.—Diagram op Schultz. just before the peiiod which was expected but failed to appear,explains readily the frequent occurrence of cases in which deliveryIs delayed until about three weeks after the date at which it wasexpected; which are so frequent that it is a matter ofpractical observation that if a woman passes her time by oneweek the probable date of delivery should be set at about a fort-night later. The tAvo hundred and eighty days which are considered to bethe average duration of pregnancy correspond to ten lunarmonths, and in most women to ten menstrual periods, a timewhich approaches so closely to nine calendar months that theIule originated by Naegele, to count forward nine months, or 16 PRACTICAL MIDWIB^ERY. wlijir unioiints to tlie same thiii/^, three months fromthe (late at which the last ment-tniation began, and add to thatdate Ave days for the probable duration of the catanienia, hasbecome the usua
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectmidwifery, bookyear18
