This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1909 Excerpt: ...second the connective tissue, the muscles, blood-vessels, and bones; and from the third the lining of the alimentary canal and its associated viscera, etc. If the further steps of development of organs out of these primary divisions had not been carefully followed, no one would dream what the word "differentiation" ...
Read More
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1909 Excerpt: ...second the connective tissue, the muscles, blood-vessels, and bones; and from the third the lining of the alimentary canal and its associated viscera, etc. If the further steps of development of organs out of these primary divisions had not been carefully followed, no one would dream what the word "differentiation" used by biologists to denote the process, means. It means that each cell, as growth goes on, takes its place where it ought to, in other words along predetermined lines. Every one of the many and diverse tissues, for example, which make up an eye, fit their places as parts of an eye and not of an ear. And so of the component parts of all the other organs. Fitness local, fitness general, fitness universal meets us at every turn, and so sure is this interdependence and interrelation of parts that an anato among the metazoa begins, should virtually contain not only all the structural peculiarities of the body of its parent without variation from its hereditary pattern, but should also have the power to determine where the untold millions of cells to grow from it are to find their proper places in the future adult body. What combination of physics and chemistry could produce this thing, when the inconceivably complex internal make-up of such a microcosm as that single primordial cell cannot be conceived of even by metaphysicians?. mist can often reconstruct an animal from a single tooth. All these internal adjustments present at last an infinitely more complex and complete mechanism than the watch which Paley instanced as an illustration of intelligent design in the making. Paley's argument, however, in our times has been quite displaced by the great conception of mechanical development, or as it is called, Evolution, a conception which whi...
Read Less