Moby Dick

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the bottom of the spinal canal will measure ten inches across, being
eight in height, and of a triangular figure with the base downwards. As
it passes through the remaining vertebrae the canal tapers in size, but
for a considerable distance remains of large capacity. Now, of course,
this canal is filled with much the same strangely fibrous substance--the
spinal cord--as the brain; and directly communicates with the brain.
And what is still more, for many feet after emerging from the brain's
cavity, the spinal cord remains of an undecreasing girth, almost
equal to that of the brain. Under all these circumstances, would it be
unreasonable to survey and map out the whale's spine phrenologically?
For, viewed in this light, the wonderful comparative smallness of his
brain proper is more than compensated by the wonderful comparative
magnitude of his spinal cord.

But leaving this hint to operate as it may with the phrenologists, I
would merely assume the spinal theory for a moment, in reference to the
Sperm Whale's hump. This august hump, if I mistake not, rises over one