OF THE SPERM WHALE. 
81 
OF THE DORSAL VERTEBRAE, 
These are ten in number, whose bodies gradually 
increase in thickness and size generally as they become 
posterior; the first being only inches in thickness 
between the articulating surfaces of the body ; 1 foot 
7 § inches in width, including lateral spines, and 1 foot 
11^ inches in depth, that is, from the superior part of 
the spinous process to the inferior portion of its body, 
the body of the first dorsal vertebra itself being 12| 
inches in depth, namely, from the floor of the spinal 
canal to the inferior portion of its body, while the tenth, 
or last, is in thickness, between the articulating surfaces 
of its body, 8| inches ; in its width 2 feet 4 inches, 
including lateral spines, and in its depth, including 
spinous process, 2 feet 7| inches ; the depth of its body, 
from the floor of the spinal canal to the lower surface, is 
the same as the first, 12| inches, being an exception to 
its general increase of size over the first. 
OF THE TERMINAL VERTEBRAE. 
These are in number thirty-two : the first of which is 
in height, 2 feet 8 inches ; in width, 2 feet 7 inches, 
including spinous processes ; and in thickness, between 
intervertebral substance, 8| inches. The height of the 
body of this vertebra alone is 1 foot 1| inches, and the 
width of the same, without lateral spines, 1 foot 3 inches. 
The bodies of these terminal vertebrae gradually increase 
from the first in height, width, and thickness, until the 
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