after   they    were    first   experienced,    little  will    remain  of  them    after   a   very    short
time.    It  is  by  repeating   them    often   in  experience  through     imagery     that    they
become  fixed,  so  that    they    stand   ready   to  do  our bidding when    we  need    next    to
use them.
The Reconstruction  of  Our Images.βTo  richness    of  experience  and frequency
of  the recall  of  our images  we  must    add one more    factor; namely, that    of  their
reconstruction  or  working over.   Few if  any images  are exact   recalls of  former
percepts    of  objects.    Indeed, such    would   be  neither possible    nor desirable.  The
images  which   we  recall  are recalled    for a   purpose,    or  in  view    of  some    future
activity,   and hence   must    be  selective,  or  made    up  of  the elements    of  several or
many    former  related images.
Thus    the boy who wishes  to  construct   a   box without a   pattern to  follow  recalls
the images  of  numerous    boxes   he  may have    seen,   and from    them    all he  has a
new image   made    over    from    many    former  percepts    and images, and this    new
image   serves  him as  a   working model.  In  this    way he  not only    gets    a   copy    which
he  can follow  to  make    his box,    but he  also    secures a   new product in  the form    of
an  image   different   from    any he  ever    had before, and is  therefore   by  so  much    the
richer. It  is  this    working over    of  our stock   of  old images  into    new and richer  and
more    suggestive  ones    that    constitutes the essence of  constructive    imagination.
The more    types   of  imagery into    which   we  can put our thought,    the more    fully   is
it  ours    and the better  our images. The spelling    lesson  needs   not only    to  be  taken
in  through the eye,    that    we  may retain  a   visual  image   of  the words,  but also    to  be
recited orally, so  that    the ear may furnish an  auditory    image,  and the organs  of
speech  a   motor   image   of  the correct forms.  It  needs   also    to  be  written,    and thus
given   into    the keeping of  the hand,   which   finally needs   most    of  all to  know    and
retain  it.
The reading lesson  should  be  taken   in  through both    the eye and the ear,    and then
expressed    by  means   of  voice   and     gesture     in  as  full    and     complete    a   way     as
possible,   that    it  may be  associated  with    motor   images. The geography   lesson
needs   not only    to  be  read,   but to  be  drawn,  or  molded, or  constructed.    The
history lesson  should  be  made    to  appeal  to  every   possible    form    of  imagery.    The
arithmetic   lesson  must    be  not     only    computed,   but     measured,   weighed,    and
pressed into    actual  service.
Thus    we  might   carry   the illustration    into    every   line    of  education   and experience,
and the same    truth   holds.  What    we  desire  to  comprehend  completely  and retain
