These are the most frequently used words in this book.
air
along
always
among
angle
annual
another
appear
argument
aristotle
author
ball
believe
between
bodies
cannot
cause
center
circle
contrary
day
degrees
distance
does
earth
equal
even
first
fixed
globe
go
great
greater
having
itself
know
less
let
light
line
little
may
means
might
moon
motion
move
movement
moving
must
natural
nature
nor
now
observations
order
others
own
part
place
point
reason
remains
rest
sagr
salv
say
second
see
seems
seen
shall
should
simp
simplicio
since
speed
sphere
star
still
straight
sun
surface
take
tell
terrestrial
therefore
things
think
third
time
toward
true
two
understand
upon
water
whether
whole
without