ANATOMICAL SOCIETY OF GREAT BRITAIN AND IRELAND, lix 



represents presumably the remains of the original anastomosis of 

 the embryonic vena cava, with the renal and cardinal veins. The 

 specimen was taken from the dissecting-room, so that the arrange- 

 ment of the vena azygos in relation to the vena cava inferior was 

 not followed in detail. It was found, however, that there was 

 nothing abnormal in the arrangement of the systemic veins in the 

 thorax. 



(13) Professor A. M. Paterson gave a preliminary account, illustrated 

 by numerous specimens, of the Development aiid Ossification of tlie 



Fig. 4. — Left inferior veua cava. 



Sternum in Man and Mammals. A full account of this communica- 

 tion will be found in the October number of the Journal of Ariatomy 

 and Physiology. 



(14) Professor Birmingham exhibited (a) Dissection of the Pelvis. 

 The body was hardened by intravascular injections of formalin. 

 After opening the abdomen and removing the small intestines, the 

 pelvis was separated from the rest of the body by an oblique cut at 

 an angle of about 30° with the horizontal plane. The section passed 

 just above the crest of the pubes in front, and through the 2nd sacral 

 vertebra behind. The difficulty of dissecting the pelvis through the 

 pelvic inlet in the ordinary way is due to the depth of the cavity and 

 the projection of the sacral promontory. Both of these diificulties 

 are removed by separating the pelvis in the manner described, and an 

 excellent view of the cavity is obtained. 



