The Life of a Brain Cell.
THE wonderful activity of the human brain is in large part due to the fact that it is made up of a vast number of cells, each of which lives its own individual life, and, in so doing, contributes to the life and activity of the whole. A German physiologist, who has given careful study to the subject, computes that "the cerebral mass is composed of at least 300,000,000 nerve cells, each an independent body, organism, and microscopic brain, so far as concerns its vital relations, but subordinated to a higher purpose in relation to the function of the organ, each living a separate life individually, though socially subject to a higher law of function. The life term 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 totally new brain." Such a delicately organized structure needs good care and the very best of blood, which can only be afforded by good food, free from unwholesome elements, and well digested.