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The powers of living matter are still more characteristic. It is continually wasting away by a kind of internal combustion, but continually repairs the waste by the processes of growth.Moreover, this growth is of a characteristic kind, differing absolutely from the so-called growth of lifeless things. Crystals and other lifeless bodies grow, if at all, by accretion, or the addition of new particles to the outside. Living matter grows from within by intus-susception, or taking in new particles, and fitting them into the interstices between those already present, throughout the whole mass. And,...

The present book, while in part a revision of Sedgwick and Tyler's Short History of Science, is to a great extent new. Like the earlier work, it is the outgrowth of a course of lectures given for a number of years to undergraduates at the Massachusetts Institute of Technology. Doctor Sedgwick having died some years after the publication of the first edition, the surviving author undertook the preparation of a revised edition and invited R. P. Bigelow, who had taken part in the lecture course, to share the editorial responsibility in cooperation with colleagues verse in other fields.BEGINNINGS...