THE GREAT ICE AGE, AND ITS RELATION TO THE ANTIQUITY OF MAN

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Seite 149 - It is better, on this account, in graduating the bottle, to make two scratches as represented in the drawing, one at the top and the other at the bottom of the curve : this prevents any future mistake.
Seite 121 - He finds, however, that though the effect of this change on the mean temperature of the year may be small, the effect on the extreme temperature of the seasons will be much more considerable; " so as to produce alternately, in the same latitude of either hemisphere, a perpetual spring, or the extreme vicissitudes of a burning summer and a rigorous winter.

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