"  Rights,  as  before-mentioned,  Vattel,  pp.  8  and  9,  are
divided  into  internal  and  external:  of  external  rights,  he
makes  the  distinction  of  perfect  and  imperfect.  I  beseech
your  honours  to  fix  this  distinction  in  your  minds.  The
perfect  external  right  only  is  accompanied  with  the  right  of
constraint.  The  imperfect  right  loses  that  quality,  and
leaves  it  to  the  party  to  comply  or  not  to  comply  with  it.
