Human physiology (Volume 2) . e, and measures, in manand the mammalia, not more than^•jyth part ofa line in diameter. Upon a particular part of the germi-nal vesicle is observed the macula germinativa or germinal spot,which presents itself as a rounded granular formation attached tothe inner wall of the germinal vesicle. All these parts are repre-sented in the marginal figure. Wagnerb thinks the germinalvesicle may be viewed as a cell — a primary cell — of which thegerminal spot forms the nucleus, and that it would perhaps bewell to style the germinal spot the germinal nucleus. The experiments
Human physiology (Volume 2) . e, and measures, in manand the mammalia, not more than^•jyth part ofa line in diameter. Upon a particular part of the germi-nal vesicle is observed the macula germinativa or germinal spot,which presents itself as a rounded granular formation attached tothe inner wall of the germinal vesicle. All these parts are repre-sented in the marginal figure. Wagnerb thinks the germinalvesicle may be viewed as a cell — a primary cell — of which thegerminal spot forms the nucleus, and that it would perhaps bewell to style the germinal spot the germinal nucleus. The experiments of Carusc have shown, that the vesicles exist a Philos. Transact, for 1838. b Human Physiology, translated by R. Willis, p. 43, Lond. 1841. See, also, theworks of the various ovologists referred to hereafter, and especially an elaborate reporton the ovum of man and the mammalia before and after fecundation, by Mr. T. , in Brit, and For. Med. Rev., Oct. 1843, p. 513. e Gazette Medicale de Paris, Aug. 12, *. Ripe Ovum of Rabbit, taken from the OraafianVesicle,a, a. Proligenous disks, the edges of whichare ragged and irregularly notched, the clearparts, b, b, being pale oil-globules, c. Thezona pellucida. d. The vitelline Vitellus. /. Germinal vesicle, g. Germi-nal spot.— (Wagner.)
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Keywords: ., bookcentury1800, bookdecade1840, booksubjectphysiology, bookyear1
