586. Proof of custom.

586.     Proof of custom.

Customary rights in respect of minerals1 are proved in the same manner as other customary rights2. Evidence of a custom in one manor cannot be given to establish the existence of a similar custom in another manor3, except possibly in the case of manors whose physical characteristics are similar, such as manors situate in the fen country or in mining districts4. Evidence of a custom to commit one sort of waste, such as cutting trees, is not evidence of a custom to commit another sort of waste, such