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The Wonderful Human Brain

According to the novel computations of a renowned histologist, who has
been calculating the aggregate cell forces of the human brain, the
cerebral mass is composed of at least 300,000,000 of nerve cells, each
an independent body, organism, and microscopic brain so far as concerns
its vital functions, but subordinate to a higher purpose in relation to
the functions of the organ; each living a separate life individually,
though socially subject to a higher law of function.

The lifetime of a nerve cell he estimates to be about sixty days, so
that 5,000,000 die every day, about 200,000 every hour, and nearly 3,500
every minute, to be succeeded by an equal number of their progeny; while
once in every sixty days a man has a new brain.

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