Chapter III. 

 Ji.NOMAL.IES OCCURRING IN GESTATION. 



Superfoetation. 



By this term is meant the conception of an already 

 pregnant animal. 



Facts have been recorded, by a number of com- 

 petent authorities, which go to prove that this condition 

 is not only possible, but probable. 



Cases have been observed amongst the uniparse, 

 •one of which is where a Mare gave birth to a horse-foal 

 and a mule-foal at the same parturition. 



Extra-Uterine Gestation. 



The fcetus here is developed in the abdomen, but 

 ■outside of the uterine cavity. The foetus may be 

 healthy, and normally developed, for a certain period of 

 its existence, but generally dies before the termination 

 of gestation. Sometimes the foetus is developed in the 

 ovary ("Ovarian Gestation"); or, it may be outside 

 the tissue, but inside the covering of the ovary. 

 Sometimes it is developed in one of the Fallopian 

 Tubes (" Tubal Gestation ") ; sometimes between the 

 tissue of the walls of the uterus (" Interstitial Gesta- 

 tion "). The most common situation, however, is in 

 the abdomen ("Abdominal Gestation"). In this case 

 the fcetus is attached to some part of the abdominal 

 wall, and is supplied with its membrane, and draws its 



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