. A study of the causes underlying the origin of human monsters : third contribution to the study of the pathology of human embryos . Fig. 263d b.—Sagittal section of the embryo. X 7 times. account of the sharply defined tissues of the chorion and slightamount of fibrous changes in the villi and the mucoid dilata-tions in the cord with some wandering cells in the tissues,I am inclined to think that this specimen represents the earlieststage of a strangulated embryo of the sixth week. No. i.] ORIGIN OF HUMAN MONSTERS. 261. Fig. 264.—Section of the vesicle attached to the chorion. X IS times. 26
. A study of the causes underlying the origin of human monsters : third contribution to the study of the pathology of human embryos . Fig. 263d b.—Sagittal section of the embryo. X 7 times. account of the sharply defined tissues of the chorion and slightamount of fibrous changes in the villi and the mucoid dilata-tions in the cord with some wandering cells in the tissues,I am inclined to think that this specimen represents the earlieststage of a strangulated embryo of the sixth week. No. i.] ORIGIN OF HUMAN MONSTERS. 261. Fig. 264.—Section of the vesicle attached to the chorion. X IS times. 262 MALL. [Vol. XIX. No. 264. Ovum, 25 x 20 x 15 mm., with a cavity within 10 mm. indiameter. Dr. Gardner, Baltimore. Last period occurred on August 12; abortion October 9;but the menses had been irregular for three months before. The ccelom is filled with hard hyaline magma, rich in roundcells, in which is imbedded the umbilical vesicle measuring2jA mm. in diameter. The chorion is thickened and fibrousand is covered with some villi, which are also fibrous. Thevesicle shows all the characteristics of the umbilical vesicleand is attached to the chorion by a thick fibrous pedicle. Atthe point of juncture it is rich in large blood-vessels filled withblood. These radiate into the surrounding chorion, but donot reach into the villi. No. 268. Embryo, C. R., 22 mm. Dr. Kammerer, New York. The form of the embryo is normal, but its body is straighterthan usual. It was hardened in formalin and some of thetissues are well pr
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