gr. 4.495
" " + 8H_2O " 1.656
S_2H_2O_2 " 3.625
" " + 8H_2O " 1.396
FeSO_4 " 3.138
" + 7H_2O " 1.857
and so in every other case. This is now a recurrence of what takes
place in gases, and proves the fallacy of the hypothesis; for if these
compounds could be volatilized the vapor densities would necessarily
vary in the inverse proportion of the degree of composition.
The reproach that Berthelot has been endeavoring for nearly a quarter of
a century to hold back the progress of scientific chemistry, is a great
and unjustifiable misrepresentation of the distinguished chemist
and member of the Institute of France, who has done so much for
thermo-chemistry, and the more unfortunate as it seems to serve only the
purpose of a prelude to the following sentences: "But Mr. Vogel cannot
claim, as can Mr. Berthelot, any real work or experiment, however
roughly performed, suggested by the desire to prove the truth of his
own views. Let him not, then, bring forth old and long since explained
discrepancies, ... but when he will have discovered new or overlooked
facts ... chemists will gladly listen." ... Mr. Greene is here no longer
occupied to investigate whether what I have said concerning Avogadro's
hypothesis is true or false, but with myself he has become personal, and
in noticing his remarks my sole object is to contend against an error
which is much prevalent.
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