. Cyclopædia of obstetrics and gynecology . acles in the way of fecundation of an ovum in this EXTRA-UTERESTE PREGlSTATirCY. 353 situation, authorizes us in considering very rare, if not in absolutely-rejecting, cases of this nature. We would add, f urtlier, that recent viewsin regard to the structure of the ovary, proving as they do the absenceof the membrana i)roiyria of the ovary, must modify considerably theopinions Avliich have been held in regard to ovarian j)regnancy. Thefecundated ovum must needs develop in the interior of the Graafianfollicle, and the wajls of the cysts must be made u
. Cyclopædia of obstetrics and gynecology . acles in the way of fecundation of an ovum in this EXTRA-UTERESTE PREGlSTATirCY. 353 situation, authorizes us in considering very rare, if not in absolutely-rejecting, cases of this nature. We would add, f urtlier, that recent viewsin regard to the structure of the ovary, proving as they do the absenceof the membrana i)roiyria of the ovary, must modify considerably theopinions Avliich have been held in regard to ovarian j)regnancy. Thefecundated ovum must needs develop in the interior of the Graafianfollicle, and the wajls of the cysts must be made uj) by the thinned-outwalls of the vesicle, and, more or less, also, of the peritoneal covering. Whatever the case, we may well limit ourselves to Depauls classifica-tion—the tubal and the intraperitoneal, for they are, in truth, theonly ones where diagnosis can be positive. We would add, further, thattubal pregnancy, through early rupture, often kills the woman, and thediagnosis is only made post-mortem. Nevertheless, we will see that in. FtG. 36.—PEEGNANCT IN A LEFT RUDIMENTARY CoRNTT. (After Heyfelder and Kussniaul.)—^.Eight half of uterus. 6, Left half, c, Vagina, e, Right tube. /, Left ovary, h. Rudimentary , Left round ligament. Mm, Limits of the peritoneum, n, Left tube, o, Right ovary, g, Placen-ta, g. Membranes, r. FcEtus. V Right round ligament. many instances the diagnosis has been made at the very beginning of thepregnancy. To the above varieties, Keller adds another form, which he calls extra-abdominal. Here the ovum develops in inguinal, and chiefly, cruralhernige. It is consequently situated not only outside of the uterus, butof the true abdominal cavity as well. Here belong the cases of Widerstein,Miiller, Skrievan, G-enth. Finally, we mention the cases of gestationin the cornu of a uterus bi-cornus—such as those reported by Stoltz,Kokitansky, Kussmaul (fig. 37.) Causes of Ectopic Gestation.—Here, also, there is divergency of the inc
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