s 23 Corrected and amended grants
23. The President may, where former grants are surrendered, make grants, or amended grants, in fee simple in any of the following cases:(a) when any lands have been held in fee simple under a grant which is found to be defective in the description of the lands intended to be thereby granted owing to incorrect survey or otherwise, and that grant has been surrendered by the holder of the grant to the intent that the holder may receive in lieu thereof a new grant correctly describing the lands and hereditaments intended to be conveyed by the surrendered grant; (b) when in consequence of any dispute regarding the boundaries of any land comprised in a grant in fee simple, or for any like cause, it has been agreed between the owner of the land and the President that the owner must surrender the grant to the intent that the owner may receive an amended grant in lieu of the grant surrendered.[15