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Of these two classes of uprushes we shall first consider the greatest, which occurs in the central portions of the tropical realm.
When we reached its upper surface, which was plainly defined, little wisps of mist or cloud were streaming up along the furrowed channels of the mountain walls. As we entered the lake of cloud the sunlight became fainter, uprushes of cold mists struck us, gloom settled, denser and denser grew the fog, drops of condensed vapor dripped from the trees under which we passed.
These appear to be uprushes of matter in the gaseous state, the upward movement being upon the margins of the field and a downward motion taking place in the middle of the irregular opening, which is darkened in its central part, thus giving it, when seen by an ordinary telescope, the aspect of a black patch on the glowing surface.
Few people go through life without knowing what it is to feel a sudden, even murderous, impulse to destroy the obstacle in their path; or seize, at all costs, that which they desire. Our ancestors called these uprushes the solicitations of the devil, seeking to destroy the Christian soul; and regarded them with justice as an opportunity of testing our spiritual strength.
Lockyer, moreover, has seen a prominence 40,000 miles high shattered in ten minutes; while uprushes have been witnessed by Respighi, of which the initial velocities were judged by him to be 400 or 500 miles a second.
An observer at the pole would probably fail ever to perceive strong flashes. For the same reason thunderstorms are more frequent in summer, the time when the difference in temperature between the surface and the upper air is greatest, when, therefore, the uprushes of air are likely to be most violent.
The total effect is often crude and heavy; and yet beneath these uncompleted surfaces are the sinews of enormous power: a greedy gusto for life, a wide imaginative experience, tumultuous uprushes; of emotion and expression, an acute if undisciplined intelligence, great masses of the veritable stuff of existence out of which great novels are made. Sherwood Anderson
But the result, so far, has been to negative the ascription to them of any systematic direction. Uprushes and downrushes are doubtless, as Father Cortie remarks, "correlated phenomena in the production of a sun-spot"; but neither seem to predominate as part of its regular internal economy. The same kind of spectroscopic evidence tells heavily against a theory of sun-spots started by Faye in 1872.
Before the war Morrie's great drinking came seldom, by fits and bursts and splendid unlasting uprushes; after the war the two states tended to approach till they merged in one continual sickly soaking.
From these falls result, primarily, spots; secondarily, through the answering uprushes in which chemical and mechanical forces co-operate, their girdles of flame-prominences. August Schmidt's optical rationale of solar phenomena was, on the other hand, a complete novelty, both in principle and development.
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