That the blood is rightly thus distinguished from all other constituents of the body is acknowledged by the highest authorities in physiology. "It is the fountain of life (says Harvey), the first to live, and the last to die, and the primary seat of the animal soul; it lives and ...
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That the blood is rightly thus distinguished from all other constituents of the body is acknowledged by the highest authorities in physiology. "It is the fountain of life (says Harvey), the first to live, and the last to die, and the primary seat of the animal soul; it lives and is nourished of itself, and by no other part of the human body." John Hunter inferred that it is the seat of life, because all the parts of the frame are formed and nourished from it. "And if (says he) it has not life previous to this operation, it must then acquire it in the act of forming: for we all give our assent to the existence of life in the parts when once formed." Milne Edwards observes that, "if an animal be bled until it falls into a state of syncope, and the further loss of blood is not prevented, all muscular motion quickly ceases, respiration is suspended, the heart pauses from its action, life is no longer manifested by any outward sign, and death soon becomes inevitable; but if, in this state, the blood of another animal of the same species be injected into the veins of the one to all appearance dead, we see with amazement this inanimate body return to life, gaining accessions of vitality with each new quantity of blood that is introduced, eventual beginning to breathe freely, moving with ease, and finally walking as it was wont to do, and recovering completely." More or less distinct traces of the recognition of blood as the vehicle of life are found in Greek and Roman writers.