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With wonderful sagacity Newton traced the consequences of the law of gravitation. He showed that the earth must be an oblate spheroid, formed by the revolution of an ellipse round its lesser axis.
Hence, the aggregation of a rotating nebulous spheroid will be more or less hindered by this resisting force, according as the rate of rotation is high or low: the opposition, in equal spheroids, being four times as great when the rotation is twice as rapid; nine times as great when it is three times as rapid; and so on.
It always seemed to me as if he looked at this earth very much as a visitor from another planet would look upon it. He was interested, and to some extent curious about it, but it was not the first spheroid he had been acquainted with, by any means. I have amused myself with comparing his descriptions of natural objects with those of the Angel Raphael in the seventh book of Paradise Lost.
He brought his dull gaze to bear on it. The object proved to be a black, wrinkled spheroid, baked hard as iron in the sunshine of Estrella's toys, a potato squeezed to dryness by the constricting power of the rawhide. In a row along the fence were others. To Senor Johnson it seemed that thus his heart was being squeezed in the fire of suffering.
The region chiefly affected in this poisoning is the jaw-bone, but the inflammation may spread to the adjoining bones and involve the vomer, the zygoma, the body of the spheroid bone, and the basilar process of the occipital bone.
Fitzhugh there were several long conferences on Snookums' peculiar behavior. Mike the Angel found himself waiting for something to happen. He hadn't the slightest notion what it was that he was waiting for, but he was as certain of its coming as he was of the fact that the Earth was an oblate spheroid. But he certainly didn't expect it to begin the way it did.
A very slender ring, taking off just the equatorial surface, will be hoop-shaped; while a tolerably massive ring, trenching appreciably on the diameter of the spheroid, will be quoit-shaped.
Thus the flattening of our sphere at the poles corroborates the opinion that its mass was once molten in a word, that its ancient history was such as the nebular theory suggests. Although we have for convenience termed the earth a flattened spheroid, it is only such in a very general sense.
He has shown that the sea, notwithstanding its fluidity, and that the atmosphere, notwithstanding its currents, exercise the same influence on the movements of the terrestrial axis as if they formed solid masses adhering to the terrestrial spheroid.
But it appears that the said proportion of the refraction is less here than in the section through FEB; for it was there the same as the ratio of N to CG, that is to say, as 156,962 to 98,779, very nearly as 8 to 5; and here it is the ratio of N to CQ the major semi-diameter of the spheroid, that is to say, as 156,962 to 105,032, very nearly as 3 to 2, but just a little less.
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