W. C. SIEGMUND. 
154 
right. The right lateral view presents this hollow having on 
the posterior end a large prominence, hard and painless, with 
some soft spots here and there also bent to the left, and extend¬ 
ing from the eighth or ninth dorsal vertebrae backwards and 
spreading upon the upper third of the ribs. The whole left side 
of the chest is bulging and more prominent, while the flank on 
the right is very hollowed as if the last two ribs were missing. 
The animal lays down on either side and gets up without 
difficulty, all his functions seem perfectly normal. 
The animal was destroyed in the dissecting rooms by bleed- 
ding and injected with plaster of Paris. 
On removing the skin of the trunk, the parnniculus carnosus 
was observed to be pale, thin and very much distended on 
the left side, the superficial aponeurosis of the spinal muscles 
being very densely drawn and thin. The muscles on the right 
side presented nothing abnormal. The viscera were removed 
and found perfectly healthy. The vertebral column was then 
separated at the neck and lumbo sacral joint, the ribs left at¬ 
tached to the spine were sawed towards the upper third and the 
specimen, seat of the deformity prepared for the museum of the 
College. 
It showed from the superior view the curvature of the verti- 
bral spine, bodies and spines of these vertebrae from the 9th to 
the 18th, the bodies of the lumbar vertebrae are somewhat de¬ 
pressed to the right. On the right side the first eleven ribs 
present their normal curvature, but between the 12th and the 
16th there is a wide depression which disappears at the last 
three ribs which have resumed their normal position. 
Looking on the internal view, lower face of the bodies of 
the vertebrae, these concur in forming a large figure S, with the 
ten last dorsal. The posteroe aorta presents the most interest¬ 
ing aspect. It follows the dorsal vertebrae in their curvature 
and forms also a large S with a kind of constriction back of the 
origin of coelias axis. Towards the back of the loins it has re¬ 
sumed its normal position until its quadrification. All the col¬ 
ateral are apparently perfect. 
