relations   between separate    facts   upon    which   judgment    and reasoning   depend. It
is  likewise    a   common  source  of  surprise    among   teachers    that    many    of  the pupils
who could   outstrip    their   classmates  in  learning    and memory  do  not turn    out to  be
able    men.    But this,   says    Whately,    "is as  reasonable  as  to  wonder  that    a   cistern if
filled  should  not be  a   perpetual   fountain."  It  is  possible    for one to  be  so  lost    in  a
tangle  of  trees   that    he  cannot  see the woods.
A    Good    Memory  Requires    Good    Thinking.—It    is  not,    then,   mere    re-
presentation     of  facts   that    constitutes     a   good    memory.     The     pupil   who     can
reproduce   a   history lesson  by  the page    has not necessarily as  good    a   memory  as
the  one     who     remembers   fewer   facts,  but     sees    the     relations   between     those
remembered, and hence   is  able    to  choose  what    he  will    remember.   Memory  must
be  discriminative. It  must    fasten  on  that    which   is  important   and keep    that    for us.
Therefore   we  can agree   that    "the    art of  remembering is  the art of  thinking."
Discrimination  must    select  the important   out of  our mental  stream, and these
images  must    be  associated  with    as  many    others  as  possible    which   are already
well    fixed   in  memory, and hence   are sure    of  recall  when    needed. In  this    way the
old will    always  serve   as  a   cue to  call    up  the new.
Memory  Must    Be  Specialized.—And    not only    must    memory, if  it  is  to  be  a
good    memory, omit    the generally   worthless,  or  trivial,    or  irrelevant, and supply
the generally   useful, significant,    and relevant,   but it  must    in  some    degree  be  a
specialized memory. It  must    minister    to  the particular  needs   and requirements    of
its owner.  Small   consolation to  you if  you are a   Latin   teacher,    and are able    to  call
up  the binomial    theorem or  the date    of  the fall    of  Constantinople  when    you are in
dire    need    of  a   conjugation or  a   declension  which   eludes  you.    It  is  much    better  for
the merchant    and politician  to  have    a   good    memory  for names   and faces   than    to
be  able    to  repeat  the succession  of  English monarchs    from    Alfred  the Great   to
Edward  VII and not be  able    to  tell    John    Smith   from    Tom Brown.  It  is  much
more    desirable   for the lawyer  to  be  able    to  remember    the necessary   details of  his
case    than    to  be  able    to  recall  all the various athletic    records of  the year;   and so
on.
In  order   to  be  a   good    memory  for us, our memory  must    be  faithful    in  dealing
with    the material    which   constitutes the needs   of  our vocations.  Our memory
may,    and should, bring   to  us  many    things  outside of  our immediate   vocations,
else    our lives   will    be  narrow; but its chief   concern and most    accurate    work    must
be  along   the path    of  our everyday    requirements    at  its hands.  And this    works   out
well    in  connection  with    the physiological   laws    which   were    stated  a   little  while
since,  providing   that    our vocations   are along   the line    of  our interests.  For the
