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,mw… ..’ . – ., . .. . -…. TEPOSSIBLE EVOLUTION OF A WORLD IN THE MAKING : THE GREAT RED SPOT ON JUPITER.
Describing this drawing, Mr. Scriven Bolton writes: “It is propounded that our earth, when once in a plastic condition, rotated on its axis so swiftly that the matter at the Equator could not adhere together, and a breach caused a portion to be fractured, which portion gradually separated from the parent planet. So, apparently, in the case of our cousin-planet Jupiter, whose rotational velocity at its surface is as great as ours used to be, there is at present a phenomenon which suggests an epoch in the evolution of moon-making. That puasling object on its surface, known as the Great Red Spot, is not a fixture of the surface, or we might regard it purely as a volcanic vent emitting hot vapours. Its constituent properties
have never been ascertained. It possesses an extremely oblate spherical outline, and its major axis measures over zo,ooo miles. Its slow irregular drift on the planet shows that while it is detached from the main globe, and is partially concealed by Jupiter’s dense atmosphere, it moves round with the planet’s axial rotation. This is especially noteworthy from the fact that theory tells us that our moon, in its early stages of evolution, was carried round with the earth’s asial motion, all the while just grazing the surface, and that its distance therefrom increased through countless ages, and is increasing. The inference denotes a Jovian moon in embryo.”