. A study of the causes underlying the origin of human monsters : third contribution to the study of the pathology of human embryos . Fig. 288a b.—Photograph of sections of the mole, showing the embryopushed to one side. Natural size. 282 MALL. [Vol. XIX. from the embryo. The embryo is pushed to one side of thechorion and is pretty well dissociated, but the tissues aresharply enough defined to recognize that the embryo is notover six weeks old. They are well infiltrated with roundcells which extend into the surrounding magma; there is noepidermis present. No. 289. Embryo of the fourth week, 8
. A study of the causes underlying the origin of human monsters : third contribution to the study of the pathology of human embryos . Fig. 288a b.—Photograph of sections of the mole, showing the embryopushed to one side. Natural size. 282 MALL. [Vol. XIX. from the embryo. The embryo is pushed to one side of thechorion and is pretty well dissociated, but the tissues aresharply enough defined to recognize that the embryo is notover six weeks old. They are well infiltrated with roundcells which extend into the surrounding magma; there is noepidermis present. No. 289. Embryo of the fourth week, 8 mm. Briille, Baltimore. The specimen is distorted and macerated and it is impos-sible to determine definitely whether or not it is normal. No. 290. Mole, 50 x 15 x 10 mm. Dr. Warren, Portland, Me. The specimen is said to be from a six weeks gestation, andthe abortion is believed to have been induced by some emmen-agogue. Sections were cut from different portions of this. Fig. 290.—Photograph of the mole. X 2 times. irregular mass and the remnants of a few villi were found,which were more or less infiltrated with leucocytes. The bulkof the mole is composed of decidua, mucous membrane of theuterus, blood, fibrin and pus. No. i.] ORIGIN OF HUMAN MONSTERS. 283 No. 291. Embryo, 5 mm. Dr. Wegefarth, Baltimore. Brodel membranes are devoid of villi and very thin. Theumbilical vesicle is necrotic and filled irregular mass.
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