ABNORMAL CONDITIONS OF THE OVA OF BIRDS. 107 



b. Atresia of the os. 



454. A section of a Human adult female pelvis, with the internal 

 generative organs in situ. The uterus is very much en- 

 larged ; it is prolapsed, and lies in the curve of the sacrum. 

 The os was occluded, and an operation was performed, 

 but the patient died. The uterus contained a quantity 

 of offensive fluid. The right ovary is diseased and con- 

 tains large cysts filling the right iliac fossa. There are 

 traces of bloot-clot in the peritoneal cavity. 



Presented by T. PFormald, Esq. 



SERIES XI. 



ABNORMAL CONDITIONS OF THE OVIDUCT AND OVA OF 



BIRDS. 



A. Of the Oviduct. 



455. The sacrum of a young Fowl with the right oviduct per- 



sistent. It forms a large thin-walled cyst, which was 

 distended with air. The left oviduct was normal ; it has 

 been removed, but its orifice is indicated by a bristle. 



Presented by W. B. Tegetmeier, Esq. 



456. The oviduct and ovary of a small Hen, which during life 



laid eggs about the size of a Pigeon's, consisting exclu- 

 sively of albumen, covered by a very perfect shell. One 

 of the eggs is seen in the abdominal opening of the ovi- 

 duct. The oviduct is so small that it could not grasp 

 and transmit the yelks. The ovary is loaded with well- 

 developed ova. When the abdomen was opened the 

 peritoneal cavity was found to be full of the yellow fluid 

 contents of the yelks, which had escaped. The egg which 

 is now in the open extremity of the oviduct was found in 

 the abdominal cavity ; another was situated in the cloaca. 

 As the egg found in the abdominal cavity had undergone no 

 change, it appears probable that it passed back into the abdominal 

 cavity when the Fowl was killed ; it was therefore replaced in the 

 extremity of the oviduct, to show how it must have passed into 



