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Sometimes a rudiment of a fifth toe appears to be traceable. The teeth of a horse are not less peculiar than its limbs. The living engine, like all others, must be well stoked if it is to do its work; and the horse, if it is to make good its wear and tear, and to exert the enormous amount of force required for its propulsion, must be well and rapidly fed.
"The intellectual movement of 'evolution," said Glenn Frank, "was not the private plaything of biologists in sequestered laboratories, but a force that altered men's conceptions in every field of affairs." This has accustomed the mind to look upon the past but as a rudiment, an outline, a preparation of the future.
For God's sake, let mothers teach their sons that first rudiment in manly character, the recognition that the girls of a conquered race, or of a barbarian tribe inhabiting one of our spheres of influence, from the very fact that they are a conquered race, or, if not conquered, hopelessly and piteously in our power, are ipso facto a most sacred trust to us, which it is both unmanly and bestial to violate.
Still prevails the transitional state from the fluid to the solid; and the jelly, that rudiment in which all animals, even the noblest, have their commencement; constitutes the whole sphere of these rudimental animals. In the snail and muscle, the residuum of the coral reappears, but refined and ennobled into a part of the animal.
It is not a whit more startling to be told that the most complex eye, with all the latest improvements, than to be told that the earliest rudiment of an optic nerve, may have been formed by the gradual accumulation of minute differences. Only allow time enough for the requisite accumulation, and neither operation is one whit more unintelligible than the other.
For since no germ, animal or vegetal, contains the slightest rudiment or indication of the future organism since the microscope has shown us that the first process set up in every fertilized germ, is a process of repeated spontaneous fissions ending in the production of a mass of cells, not one of which exhibits any special character; there seems no alternative but to suppose that the partial organization at any moment existing in a growing embryo, is transformed by the agencies acting upon it into the succeeding phase of organization, and this into the next, until, through ever-increasing complexities, the ultimate form is reached.
After a time the stress of life in the water drove them back to the land, and the gills became useless. But the folds or scales of the tough coat, which had covered the gills, would remain as projecting planes, and are thought to have been the rudiment from which a long period of selection evolved the huge wings of the early dragon-flies and mayflies.
It would be tedious, and it is unnecessary for my present purpose, to trace the process of development further; suffice it to say, that, by a long and gradual series of changes, the rudiment here depicted and described becomes a puppy, is born, and then, by still slower and less perceptible steps, passes into the adult Dog.
Sometimes a rudiment of a fifth toe appears to be traceable. The teeth of a horse are not less peculiar than its limbs. The living engine, like all others, must be well stoked if it is to do its work; and the horse, if it is to make good its wear and tear, and to exert the enormous amount of force required for its propulsion, must be well and rapidly fed.
It presents three complete toes one large median and two smaller lateral ones; and there is a rudiment of that digit, which answers to the little finger of the human hand. The European record of the pedigree of the horse stops here; in the American Tertiaries, on the contrary, the series of ancestral equine forms is continued into the Eocene formations.
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