162 Dr. J. B. S. Jackson's Dissections of a 
between the cavities was distinctly shown. The Ist (b) was 
11: inches in length, and 42 inches in width superiorly. 
The 9d (c and c) was of a somewhat globular form, and 
smaller than the first, with which it communicated largely ; 
when recent, it felt about as thick as the first, though evi- 
dently quite different in structure; and, on being dried, the 
characteristic rugæ are distinctly seen. Between these two, 
is a small supplementary cavity, partially seen in the figure 
(d), of a crescentic form, extending about half round the 
organ, and opening largely throughout its whole extent into 
the first cavity, with which it seems to be connected; the 
parietes, however, are thinner than those of the first; it is 
separated from both the cavities by broad septa, and the 
limits externally are well marked, so that it should perhaps 
be rather regarded as a distinct cavity. The third cavity 
(e) is quite small, but perfectly distinct, and equal to be- 
tween one and two inches in diameter. The fourth (f) 8 
about three times as large as the last, and equally distinct, 
of a rounded form, and quite prominent. "The fifth (8) , 
elongated, curved upon itself, and thin like the two last ; it 1s 
13} inches in length, following the curve, and about 6} inches 
in circumference midway, though larger at the two extremities. 
Connected with these is what has been described as an ad- 
ditional cavity of the stomach, but which, as above stated, I 
should certainly regard as a dilatation of the intestine. This 
cavity (h) is 32 inches long, 7: inches in circumference at 15 
commencement, and 3j inches at its termination, at which last 
part there is a marked contraction (i), but without the feel of 
anything like pylorus. Immediately below this, the intestine 
omes suddenly much thicker, as if from the commencement 
of valvulæ conniventes. As in the dolphin, the second and 
third cavities of the stomach, the third and fourth, the fourth 
and fifth, the fifth and sixth, as many would call the last, are 
divided by a thin, transverse septum, perforated by a $t 
"The intestine was 57 feet, or eight times the length of the 
