068 ZOOLOGY. 
region of the normally situated ears than is common to this breed 
of hogs, the only external departure from normality being in the 
number of tusks, there being double the usual number. In the 
left side of the mouth the position of the four tusks is alternate, 
the anterior superior one being situated between the two in the 
inferior maxillary. On the right side, those in the inferior are 
anterior to those in the superior maxillary. 
There was one sternum in common, situated on the front side ; 
the ribs of cach thorax extending about four lines behind it. On 
the back side the union was formed by muscular prolongations 
from the latissimus-dorsi, trapezoid and intercostal muscles. 
The right pig had a right lateral curvature of the spine in the 
‘superior cervical region; the spine of the other having a double 
lateral curvature, the superior curve being to the left, in the dorsal 
region, the inferior one to right in the lumbar region. 
The thoracic viscera were transposed at right angles, the right. 
lung of each pig occupying the left side of the thoracic cavity of 
the other, and the left lungs being situated in the right sides of the 
respective thoraxes. The anterior trachea was connected with the 
lung situated in the left side of the right hog, and the lung situated 
in the right side.of the left hog; the posterior trachea exhibiting 
a like connection with the ether lungs. One lung, the one sit- 
uated in the right side of the left hog, was much larger than the 
other three, respiration having taken place in it, the other three 
never having exercised that function.* 
There was but one pericardium containing the two hearts. 
The oral cavity, anterior to the pharynx presented a normal ap- 
pearance, with the exception of the tusks, already referred to. 
The anterior glottis was situated normally. e posterior one was 
reversed in position, the epiglottis being situated on the posterior 
side; the wsophageal orifice being situated between the two. 
In the abdomen were two livers, that of the right hog being of 
a pinkish hue ; the other of a dark brown appearance. There was 
but one stomach, the esophageal orifice being situated in the cen- 
re superiorly, the pyloric occupying a position directly opposite. 
, when inflated, presented the appearance of a sac, 
constricted throigloüt its centre in a vertical direction. The 
- duodenum and jejunum were single; the latter, at its inferior ex- 
_* The hogs, when found, were lifeless, and were supposed to have been still-born. 
