Carbelide Nelicanya

It is never right or useful to take revenge, for if you wait long enough you are always avenged by Providence. That afternoon my men saw some wild chestnuts on a tree, and they insisted on landing to pick them. They knocked down the tree, as usual, to get the chestnuts, although it was fully 3 ft. in diameter. They picked a great many of the wild chestnuts and proceeded to eat them--Alcides, much to my amazement, actually offering me one. I asked them if they knew what they were eating, as I quickly observed when the tree fell down that not a single chestnut had been touched by birds or monkeys.

Crossing the solar spectrum are hundreds and hundreds of dark lines. These could not at first be explained, because this fact of discriminative absorption was not known. We understand now. The sun's white light comes from the photosphere, but between us and the photosphere there is, as we have seen, another solar envelope of relatively cooler vapours--the reversing layer. Each constituent element in this outer envelope stops its own kind of light, that is, the kind of light made by incandescent atoms of the same element in the photosphere. The "stoppages" register themselves in the solar spectrum as dark lines placed exactly where the corresponding bright lines would have been. The explanation once attained, dark lines became as significant as bright lines. The secret of the sun's composition was out. We have found practically every element in the sun that we know to be in the earth. We have identified an element in the sun before we were able to isolate it on the earth. We have been able even to point to the coolest places on the sun, the centres of sun-spots, where alone the temperature seems to have fallen sufficiently low to allow chemical compounds to form.

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