. The cell in development and inheritance. Cells; Cells. INTRODUCTION "yedes Thier erschehit ah eine Suni7ne vitaler Einheiten, von denen jede den voUen Charakter des Lebens an sich ; During the half-century that has elapsed since the enunciation of the cell-theory by Schleiden and Schwann, in 1838-39, it has become ever more clearly apparent that the key to all ultimate biological problems must, in the last analysis, be sought in the cell. It was the cell-theory that first brought the structure of plants and animals under one point of view by revealing their common p
. The cell in development and inheritance. Cells; Cells. INTRODUCTION "yedes Thier erschehit ah eine Suni7ne vitaler Einheiten, von denen jede den voUen Charakter des Lebens an sich ; During the half-century that has elapsed since the enunciation of the cell-theory by Schleiden and Schwann, in 1838-39, it has become ever more clearly apparent that the key to all ultimate biological problems must, in the last analysis, be sought in the cell. It was the cell-theory that first brought the structure of plants and animals under one point of view by revealing their common plan of organization. It was through the cell-theory that Kolliker and Remak opened the way to an understanding of the nature of embryological development, and the law of genetic continuity lying at the basis of inheritance. It was the cell-theory again which, in the hands of Virchow and Max Schultze, inaugurated a new era in the history of physiology and pathology, by showing that all the various functions of the body, in health and in disease, are but the outward expression of cell-activi- ties. And at a still later day it was through the cell-theory that Hert- wig, Fol, Van Beneden, and Strasburger solved the long-standing riddle of the fertilization of the &^z, and the mechanism of hereditary transmission. No other biological generalization, save only the theory of organic evolution, has brought so many apparently diverse phe- nomena under a common point of view or has accomplished more for the unification of knowledge. The cell-theory must therefore be placed beside the .evolution-theory as one of the foundation stones of modern biology. And yet the historian of latter-day biology cannot fail to be struck with the fact that these two great generalizations, nearly related as they are, have been developed along widely different lines of research, and have only within a very recent period met upon a common ground. The theory of evolution originally grew out of the study of
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectcells, bookyear1896
