These are the most frequently used words in this book.
above
against
age
air
always
among
animals
best
body
case
causes
certain
cold
con
consumption
day
death
degree
disease
duration
during
effect
even
existence
far
first
following
food
general
give
good
great
greater
greatest
health
however
idea
ing
instances
itself
kind
less
let
life
little
live
living
long
longer
man
manner
may
means
men
mind
must
nature
necessary
new
nothing
nourishment
now
often
old
organs
ought
part
particular
people
period
physical
physician
place
plants
poison
possible
power
present
proper
regard
restoration
shall
should
skin
state
still
stomach
strong
themselves
therefore
time
tion
two
use
vital
water
whole
without
world
years