Aha 
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138 Dr. J. B. S. Jacksons 1 Dissectio: 
"A. rr 
observations were founded upon the dissection of seven differ- 
ent -species, and that one of the number was a spermaceti 
whale, though he says that some of them were only super- 
ficially examined ; it does not appear whether this was the 
case with regard to the whale, but it may be suspected, as he 
mentions only two of the internal organs, the heart and the 
tongue. Dr. Alderson describes the heart particularly, and 
notices the form of the thyroid cartilage, and G. Cuvier figures 
the body of the hyoid bone. The osteology, and some of the 
external organs, as they may be called, have been fully de- 
scribed ; but, as I have found nothing more concerning the 
internal structure than what is above mentioned, I shall give 
my notes of this dissection in detail. The second specimen 
examined was probably the Delphinus delphis, and the third the 
Phocena globiceps. The fourth consisted of the organs merely 
of the common porpoise. These three last dissections, of 
which full notes were taken, will not be given in detail, bat 
chiefly those points in the description of particular parts which 
I have not found noticed by authors, or which differed from 
their descriptions ; 7 organs will also be described, which 
are not mentioned the authors above quoted, or whose 
existence has been denied. 
OF THE SPERMACETI WHALE. 
This was a very young specimen, and was taken in Vine- 
yard Sound, about fifteen miles from New Bedford, on the 
29th of March, 1842. On the 31st it was brought on the 
Providence Railroad to this city for exhibition, and on the 
w 
night of April Ist, with the assistance of Dr. William Henry — 
Thayer, I removed the organs; these were carried to 6^ — 
Medical College on the following day, and v 
ined. Lcd c 
. On its arrival at the railroad depot, it 
. 8,053 pounds. After the removal of the organs, the body 
having been stuffed to about its natural size, and care!u 
vere there exam" —— 
found to weigh 
