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44
PHYSIOLOGY
AND
DIET.
brought
into
and
dissolved
and
changed
within the
or-
ganism
are
the
true
ministers
of
said
operations.
The
digested
parts
of
this
supply
are
absorbed
by
the
blood,
and
deposited
by
it
where
need
may
be,
while
those
parts
worthy
to
be
ejected
are
carried
away
by
the
same
medium,
and
delivered
for
expulsion
to
kidneys,
lungs,
glands,
etc.
If
necessary,
we
can
aid
nutrition
artificially,
and
we
may
do
the
same
in
regard
to
digestion
by
adding
cer-
tain
compounds,
as
digestives
and
tonics
(pepsin,
pancreatin,
muriatic
acid,
phosphates,
etc.),
to
our
food
or
cordials,
and
the
selection
of
these
com-
pounds
is
most
highly
developed
in
the
art
of
mixing
drinks.
Besides
food,
man
requires
a
number
of
substances
which
affect
agreeably
the
tissue
and
the
nerves;
they
are,
to
our
opinion,
necessary
for
the
welfare
of
an
in-
dividual,
and
mainly
consist
of
spices,
alcoholic
bever-
ages,
coffee,,
tea,
chocolate,
tobacco,
narcotic
extracts
of
plants,
as
opium,
hasheesh,
and
certain
newly
dis-
covered
drugs,
cocaine,
chloral,
chloroform,
ether,
etc.
They
more
or
less
irritate
the
nervous
system,
and
thus
dispel
the
feeling
of
pain,
fatigue,
etc.,
for
a
certain
space
of
time,
and
increase
the
ability
of
resistance
as
also
the
working
power.
They
are
perfectly
harmless
as
long
as
there
is
full
supply
of
nutritives,
and
while
they
are
taken
reason-
ably.
Among
these
substances
rank
first
the
alcoholic