M. Dumas called the attention of the Academy to this point, in
connection with its mission of selecting suitable stations for observing
the transit of Venus. The process and apparatus of Muentz and Aubin
offer the means adapted for making these experiments, and seem
sufficient to solve the problem which science proposes, of determining
the present quantity of carbonic acid in the air.
If these experiments yield satisfactory results, as we have good reasons
to believe they will, it is to be hoped that annual observations will be
made in properly-chosen places, so as to determine the variations which
may possibly take place in the relative quantity of atmospheric carbonic
acid during the coming century.--_Compt. Rend_., p. 589.
[Although this proposition was made by a Frenchman to his fellow
scientists, would it not be well for some American to accept the
challenge, and bring it before the coming meeting of the American
Association for the Advancement of Science, in the hope that we,
too, may contribute our mite of effort in the same direction?--_Ed.
Knowledge_.]
* * * * *
THE INFLUENCE OF AQUEOUS VAPOR ON THE EXPLOSION OF CARBONIC OXIDE AND
OXYGEN.
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