law: 43.  Effect  of  introduction  or  canal-irrigation  on  landlord's  right  to  enhance.-
  If  a revision of settlement is a ground for entertaining a suit, for the enhancement of rent, the introduction of canal-irrigation into any land shall have the same effect on the landlord's right to re-enhance the rent of a tenant with a right of occupancy o f such land, as if a revision of settlement had taken place, under which the revenue payable in respect of such land had been increased.