| (a) | - | a right which would tend to the total destruction of the subject of the right, or the property on which, if the acquisition were made, liability would be imposed; |
| (b) | - | a right to the free passage of light or air to an open space of ground; |
| (c) | - | a right to surface-water not flowing in a stream and not permanently collected in a pool, tank or otherwise; |
| (d) | - | a right to underground water not passing in a defined channel. |