The
specific
gravity
of
sulphuretted
hydrogen
almean
temperature
and
pressure
is
10645,
which
differs
very
little
from
the
estimation
of
M.
Kirwan
*
that
of
sulphureous
and
gaz
is
20967
in
the
last
bakerian
lecture,
I
have
estimated
the
specific
gravity
of
sulphureous
hydrogene
at
35
grains,
the
100
cub.
inetres.
*according
to
this
last
expérience
sulphuretted
hydrogene
is
composed
of
1
proportion
of
hydrogene
represented
by
1,
and
1
of
sulphur
represented
by
13,4.
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