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The atoms of our elements arise from the grouping together in definite numbers of the primitive atoms or atoms of mass. As the Kant-Laplace nebular hypothesis has it, the rotating heavenly bodies separate themselves out from that vibrating primeval cloud. A single unit among many thousands of celestial bodies is our sun, with its planets, which originated by being centrifugally thrown off from it.

These arguments are three in number. I. The first is based upon the undoubted fact that the tides tend to retard the rate of the earth's rotation upon its axis. That this must be so is obvious, if one considers, roughly, that the tides result from the pull which the sun and the moon exert upon the sea, causing it to act as a sort of break upon the rotating solid earth.

And the later German philosophy has proceeded from this standpoint. Kant began his career in this way by abolishing Newton's conception of a stable solar system which persisted after receiving its first impulse, in favor of a historical process, to wit, the origin of the sun and all the planets from a rotating mass of nebulæ.

The line between the various pigments should be striped with a thin black ring. Unless you use a lathe to hold your arrows in the painting process, you can employ two wooden blocks or rests, one having a shallow countersunk hole on its lateral face to hold the nock while rotating, the other having a groove on its upper surface.

You deserve it more'n any guard we've ever had here. Then, too, your ideas of rotating your crew, and especially that fertilizer deal, have raised the effective work-life and speed of the natives almost thirty percent. I figured it out, and they'll be getting off cheap if they give you what I'm recommending two months pay as a bonus." "Yowie!"

Let us inquire, then, whether the experiment ought to have similar results if carried out elsewhere. It is obvious that a great deal depends on the mode of suspension. What is needed is that the pendulum should be as little affected as possible by its connection with the rotating earth.

A wireless key is made like an ordinary telegraph key except that where large currents are to be used it is somewhat heavier and is provided with large silver contact points. Spark gaps for amateur work are usually of: the plain or stationary type, the rotating type, and the quenched gap type.

It would, indeed, be a sad deprivation if the mournful cold light of the moon, welcome enough as a change from sunlight, were to take the place of sunlight in the daytime. For a very long time astronomers could not discover what time Venus took in rotating on her own axis that is to say, what the length of her day was.

It is then quickly removed from the flame and gently blown as indicated in d, continuing the rotation of the tube during the blowing, and at the same time pressing the ends of the tube together a little so as to make a short thick-walled bulb. The joint is then returned to the flame and reheated, rotating as before, shrinking to about the shape of e.

Now, an ideal take-up should not commence to act until the needle has ascended above the fabric, and one of the most important steps toward perfection in sewing machines was undoubtedly attained when such a device was actually invented. In effecting this, the means employed consists of a differential or variable cam, rotating with the main shaft.