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Importance of some knowledge of the body and its needs Fearful responsibility of entering upon domestic duties in ignorance The fundamental vital principle Cell-life Wonders of the microscope Cell-multiplication Constant interplay of decay and growth necessary to life The red and white cells of the blood Secreting and converting power The nervous system The brain and the nerves Structural arrangement and functions The ganglionic system The nervous fluid Necessity of properly apportioned exercise to nerves of sensation and of motion Evils of excessive or insufficient exercise Equal development of the whole.
Ever since the days when our English forefathers dwelt in village communities in the forests of northern Germany, the idea of a common land or folkland a territory belonging to the whole community, and upon which new communities might be organized by a process analogous to what physiologists call cell-multiplication had been perfectly familiar to everybody.
Carrel's experiments with living animal tissue immersed in a proper mother-liquid illustrate how the vital process cell-multiplication may be induced to go on and on, blindly, aimlessly, for an almost indefinite time. The cells multiply, but they do not organize themselves into a constructive community and build an organ or any purposeful part.
Science can take living tissue and make it grow outside of the body from which it came, but it will only repeat endlessly the first step of life that of cell-multiplication; it is like a fire that will burn as long as fuel is given it and the ashes are removed; but it is entirely purposeless; it will not build up the organ of which it once formed a part, much less the whole organized body.
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