Sperm Whale and other Cetaceans. 151 
with those of Mr. Beale, who, on this point, is the best of all 
authorities. - Captain Chase has seen the blow-hole cut open, 
and describes it as a single, continuous tube, about as large as 
a man's arm, and without any lateral cavities such as are found 
in the dolphin ; inner surface smooth, and black; it extends 
backwards near the top of the head as far as the eye, and then 
turns down to the throat ; this last descending portion he has 
never examined. 
The following parts have been preserved for the Society's 
Collection : — 1st, the stomach, with the cesophagus, and com- 
mencement of the intestine ; 2d, portions of intestine, show- 
ing the structure at different parts ; 3d, the heart, and large 
vessels; 4th, the tongue, palate, pharynx, larynx, trachea and 
large bronchi ; 5th, the genital organs ; 6th, a cast has been 
made of one of the kidneys. 
Since this dissection was made, I have had an opportunity 
to examine the entire lower jaw from six different subjects, 
and I would here give the result of these observations, as there 
seem to be some erroneous views with regard to the teeth ; 
also, recently, Dr. Henry. Wheatland, of Salem, has examined 
three others, and sent me his observations, which will be added 
to the above. 
The first specimen was from a sperm whale that was said 
to have made 110 barrels of oil, and that was taken only a 
... Week before, by a vessel bound into New Bedford. The length 
a ee cee) ee | AS Ye A eet 
DS eed RI Ce 
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os 
on the median line was 16: feet, and from the back tooth to 
the articulating surface 51 feet. The teeth were generally more 
or less movable, the gum being still quite fresh; posteriorly 
Y were small, and appeared but little above the gum; on 
might side there were 25, regularly arranged, but on the 
only 24, the number often varying, not merely in different 
viduals of the same species, as a general rule in the ceta- 
left 
indi 
Seans, but in the same individual on the two sides; the ninth 
3nd tenth from the front, on the left side, though of full size, 
"ere so close together as fairly to touch, several of the teeth 
: about them not being opposite to those upon the other side, 
as they generally were. 
