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AERATED
WATERS,
AND
LEMON
SHERBETS.
—
i
Soda-Water
and
other
Aerated
Draughts
owe
their
effervescence
to
carbonic
acid
gas
;
they
are
in
much
request
during
hot
weather
to
allay
thirst,
and
in
a
feverish
condition
of
the
human
frame.
Many
natural
mineral
waters
are
aerated.
Mineral waters
are
divided
into
four
classes
carbonated
(
as
Seltzer,
&c.
)
chalybeate
(
as
!
Cheltenham,
&c.)
;
Saline
(
as
Seidlitz,
&c.)
;
sul-
:
phurous
(as
Harrogate,
&c.).
Aerated
Chalybeate
Water
(
aqua
chalybeata
)
contains
proto-sulphate
of
iron,
and
bicarbonate
of
potassa
;
it is
an
easy
and
excellent
mode
of
intro-
ducing
iron
into
the
blood,
and
is
much
recom-
mended
on
that
account,
possessing
equal
tonic
properties
to
that
of
the
natural
springs.
Carrara,
or
Carbonated
Lime
Water,
is
an
aerated
solution
of
bicarbonate
of
lime;
the
best
I