no  toll   is   demandable  for  navigating,    except   in   ports   and
harbours,  or  where  benefit  is  done  to  navigation,  4,  47,  48,
398,  399,  536,  547,  550,  558,  571.
in  ports  and  harbours,  45,  400,  411.
the  regulations  for  under  the  Merchant  Shipping  Acts,  401 — 411.
as  to  rales  of  the  sea  in  saUing,  steering,  &c.,  401 — 407,  and

notes,
foreign  countries  which  have  adopted  the  rules,  n.  (1),  403.
rules  of  the  sea  as  to  lights,  fog  signals,  sailing  and  steering,

collisions,  n.,  403.
as  to  pilots  and  pilotage,  408.
as  to  lighthouses,  buoys,  and  beacons,  410,  411.
as  to  the  duties  of  the  Trinity  House,  410,  411.
as  to  passengers,  411.
in  inland  waters,  16,  58—61,68,72,78,79,92, 105,356,367,411—443.
on  rivers  forming  boundary  between  two  states,  international

law  as  to,  68,  n.
rules  as  to  hghts,   signals,  and  collisions  in,  under  Merchant
Shipping  Acts,  411,  412,  and  note,
in  tidal  waters,  411^-441.
the  general  right  of  is  common  to  all  the  subjects  of  the  realm,
58,  413.
and  extends  to  all  waters  navigable  at  any  state  of  the  tide,

60,  413.
and  to  the  whole  of  the  navigable  channel,  72,  78,  357,  416,
424,  431.
and  includes  the  right  of  grounding  and  anchoring  free  of
toU,  72,  416.
and  of  stopping  for  a  reasonable  time  to  unload  and  for  a
wind,  72,  419.
unless  some  benefit  to  the  navigation  can  be  shown  as  a
consideration  for  the  toU,  417.
what  is  evidence  that  a  river  is  navigable,  60,  413.
change  of  course  of  a  river  does  not  destroy  the  right,  416.
which  can  only  be  extinguished  or  abridged  by  act  of  par-
liament, by  writ  ad  quod  damnum,  or  by  natural  causes,

61,  72,  421.
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718  INDEX.
'NAVldATlO'N— continued.
in  tidal  waters — continued.
