149 Dr. J. B. S. Jackson's Dissections of a 
The second cavity of the stomach (c) differed entirely from | 
that of the cetaceans generally. In the first place, the œso- 
phagus opened about as freely into it as into the first. cavity. 
Secondly, the communication between it and the second was | 
very large, measuring 15 inches across when cut. open, and it f 
was not surrounded by projections of any sort. Thirdly, in- — — 
stead of being spherical, it was much elongated, and terminated | 
at the further extremity in a blunt point, measuring 20 inches i 
in length. Fourthly, the characteristic ruga: on the inner sur- - 
face were nowhere strongly marked, and towards the first cavity 
were even wanting. The mucous coat was about half a line 
in thickness, quite dense, and showed upon the cut edge a 
slight appearance of fine, whitish, perpendicular and parallel 
lines, this structure being often described as highly glandular 
in the cetaceans. 
The third cavity (e) which evidently corresponds to the 
fourth, as generally described in the cetaceans, arose from the 
second about midway (d), was of an elongated form, quite 
narrow at its commencement, but becoming dilated and curved 
upon itself towards its further extremity. Externally it measured 
30 inches in length, 3} inches in diameter for the first four 
inches, and 18 inches at the largest part. ‘The mucous coat, as 
compared with the second cavity, was less rugous, thinner, less 
dense, and without any of the linear appearance. There 18 
generally a very small, intermediate cavity between this and 
the second, of a spherical form and marked by distinct orifices, 
appeared rather larger than the first cavity, the largest diameter — 
being about 13 inches, and the transverse about 6 inches. - B 
was extensively and intimately connected with the third cavit» 
but the opening between them was exceedingly small LE , ; 
vd 
measuring only } inch in diameter, the two appearing not. 99 
