Talk:Paper - Internal migration of the ovum (1921)

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80

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82 S3

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Migration to exact balance.

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100

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101

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Total number of

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ova uneven;

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balance restored

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to± 4.

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. 2

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112

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Balance not fuUv

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restored.

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Migration l>eyonil

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balance.

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124

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125

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126

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128

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129

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Xo migration.

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Migration toward

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' 8

excess side.

March, 19-21]

JOHNS HOPKINS HOSPITAL BULLETIN

83

daily suitable for transportation by the uterus. It will be of much interest to learn whether migration of the pig's ovum can be demonstrated before the tenth day, while it is still minute and spherical.

If the forgoing discussion has any bearing upon the clinical side of the question, it is that internal migration of the human ovum is still to be regarded as occasionally possible, more especially perhaps in cases of multiple gestation. Twin embryos were present in the case of Andrews, previously mentioned, which is up to the present the most satisfactory case among those interpreted as examples of this form of migration in the human.

RKFEREXCES

Andrews, H. R. : 1912-13. A case of simultaneous intra-uterine and extra-uterine pregnancy, witli probalile " internal wandering " of the ovum. Proe. Roy, Soc. Med. London. Oljstet. and Gyn. Sect., 52-53.

Burckhard, G. : 190-1. 1st eine innere und iiussere Ueberwanderung des Eies moglieh? Ztsch. f. Geb. u. Gyn., LIV, 470-484.

Corner, G. W.: 1915. The corpus luteum of pregnancy, as it is in swine. Publication No. 222 (Contributions to Embryology, No. 5) of the Carnegie Institution of Washington.

Corner, G. W., and Amsba ugh. A. E. : 1917. ffistrus and ovulation in swine. Anat. Rec, XII, 287.

Kelly. H. A.: 1906. Operative Gynecohigy. (2d Edition) vol. 2, p. 185.

KUpfer, M.: 1920. Beitrage zur Morphologic der Weiblichen Geschlechtsorgane bei den Siiugetieren. Viertcljahrschrift der Xaturforsch. Gesellsch., in Zurich, LXV, 377-433.

Kussmaul, A.: 1859. Von dem Mangel, der Verkummerung und Verdoppelung der Gebilrmutter und der Uel^erwanderung des Eies. Wiirzburg (quoted by Williams, 1917).

Leopold, G.: 1880. Die LTeljerwanderuiig der Eier. Arcli. f. Gvn., XVI, 22-44.

Mayrhofer. C: 1876. Die gelben Kiirper und die Ueberwanderung des Eies. Wiener Med, Wclinschr.

Williams, J. Whitridge: 1917. Obstetrics, Chapter 3.

Winckler: 1905. Ein Fall von Ueberwanderung des Menschlicheu Eies. Verb, deutsch. pathol. Gesellsch., Jena, VIII, 177.