law: Indian Easements Act, 1882
  30. Partition of dominant heritage
  Where a dominant heritage is divided between two or more
  
  persons, the easement becomes annexed to each of the shares, but not so as to
  
  increase substantially the burden on the servant heritage:
  PROVIDED that such annexation is consistent with the
  
  terms of the instrument, decree or revenue proceeding (if any) under which the
  
  division was made, and in the case of prescriptive rights, with the user during
  
  the prescriptive period.
  Illustrations
  (a) A house to which a right of way by a particular path is annexed
  
  is divided into two parts, one of which is granted to A, the other to B. Each
  
  is entitled, in respect of his part, to a right of way by the same path.
  (b) A house to which is annexed the right of drawing water from
  
  a well to the extend of fifty buckets a day is divided into two distinct
  
  heritages, one of which is granted to A, the other to B. A and B are each
  
  entitled, in respect of his heritage, to draw from the well fifty buckets a
  
  day; but the amount drawn by both must not exceed fifty buckets a day.
  (c) A, having in respect of his house an easement of light,
  
  divides the house into three distinct heritages. Each of these continues to
  
  have the right to have its windows unobstructed.