150 
GREENLAND VOYAGE. 
the little whale yet to catch by filtration out of 
the sea, the shrimps and other insects on which 
the animal in a more advanced stage is dependent 
for its nourishment; maternal assistance and pro¬ 
tection appeared, therefore, to have been essential 
for its support. 
The muscles about the neck, appropriated to 
the movements of the jaws, formed a bed, if ex¬ 
tended, of nearly 5 feet broad, and a foot thick. 
The central part of the diaphragm was 2 inches 
in thickness. The two principal arteries in the 
neck (the carotid) were so large, as to admit a 
man’s hand and arm. 
The brain lies in a small cavity in the upper 
and back part of the skull. The cavity included 
within the jria mate?', exclusive of the foramen 
magnum, measured only 8 inches by 5. The up¬ 
per part of the brain lies very near the surface of 
the skull. The convolutions of the cortical sub¬ 
stance lie in beautiful fringed folds, attached to 
the medullary portion, which is white, as in the 
human brain. The general appearance of the 
brain is not unlike that of other mammalia; but 
its smallness is remarkable. The quantity of brain 
in a human subject of 140 or 160 pounds weight, 
is, according to Haller, 4 pounds ;—in this whale 
of 11,200 pounds, or seventy times the weight of 
a man, the brain was only 3 pounds 12 ounces. 
