coTifotitsof  754^     The  contents  of  oblijmtions  do   not  consist,  like  those

of  rights  in  rem,    of   a    limited   number   of  well   defined   states
of  fact,  but  are  usually    determined   by   the    will   of  the   parties
who  create  the  obligation,  and  can    not   in   most  cases  be  other-
wise defined  than    as   the    state    of  facts   that   will    arise   from
^tTJ^^n^^and  *^®  perfoHuance  of  the  obligation  duty.      The   duty  also  can  not
tixeri^fht.    generally    be   separated   from   the    right,    but   is    usually  defined
by  actual  consequences  which  are    the    same    as,    or  the  negjitive
of,    the    facts   which   form   the    content    of    the    right,    so    that
there  can  be  no  breach  of  the   duty   without   a   violation  of   the
right.     Therefore  the  rights  and  duties,  having  their  origin  in  che
same  facts  and  covering  the   same  ground,  are  most  conveniently
ir.riica.     treated    of  together.      The   party    subject   to    the   duty  is  called

the  obligor;  the  party  to  whom  it  is  owed,  the  obligee.
ciasseH  of  Obligations   may   arise,    and  may   be   classified  according  to

their  origin,  in  the  following  ways.
By  direct  act  755.     Obligations  are  sometimes  created  bv  the  direct  act  of

of  the  Btatcx  •  rm

the  sovereign  power.  Tliese  may  be  imposed  directly  by  statute,  as
b^8tatu°°'  when  the  legislature  creates  a  new  township  or  county  out  of  part

of  an  old  one,  and  charges  upon  the  new  corj)oration  its  propor-
jDdirmexita  tiou  of  the   debts   of  the    old.      But   the    most  common  sources

ftud  decrees.
