"I  say  the  rate  and  not  the  time  of  repair.  The  busiest
man  needs  no  more  hours  of  rest  than  the  idler.  Some  years
ago  Professor  Patrick,  of  the  Iowa  State  University,  kept  three
yoTing  men  awake  four  days  and  nights.  When  his  observations
on  them  were  finished,  the  subjects  were  permitted  to  sleep
themselves  out.  All  awoke  from  this  sleep  completely  refreshed,
but  the  one  who  took  longest  to  restore  himself  from  his  long
vigil  only  slept  one-third  more  time  than  was  regular  with  him."

Ownership. — This  instinct  arises  in  the  second  year  of  life.
Private  ownership  cannot  be  practically  abolished  until  human
nature  is  changed.
Loan  a  child  a  lead  pencil,  and  he  will  use  it  mechanically;
give  it  to  him,  and  he  will  use  it  with  still  more  interest;  let  him
buy  it,  and  it  is  at  once  suffused  with  the  halo  of  ownership.
That  is  the  reason  why  it  is  advised  that,  no  matter  how  poor  or
wealthy  a  school  may  be,  the  children  be  required  to  bu}''  the
picture-mounting-book  or  note  book,  while  the  school  supplies
the  pictures.    In  the  same  way  in  distributing  Bibles  and  Prayer


A  STUDY  OF  PSYCHOLOGY  101

Books,  it  is  far  better  to  let  the  children  pay,  say  one-half  the
cost,  in  order  that  they  may  value  it.  Ownership,  if  it  costs
something,  creates  interest  of  a  very  strong  kind.  In  some
schools  even  the  lesson  books  are  sold  to  the  scholars,  just  as  in
many  public  schools  to-day.  Magazines  which  we  receive  free  we
seldom  read.  Those  that  we  pay  for,  we  read  to  get  our  money's
worth.
The  Accumulating,  Collecimg,  Acquisitive  Instinct  makes
"collections"  of  stamps,  coins,  postmarks,  eggs,  and  the  like.
