13. (1) Where any abandoned property consists of shares in a joint property, business or firm, and if the shares vested in the Government constitute the greater part of such joint property, business or firm, reckoned according to the value of the whole, the Government may take possession and assume control and management of the whole of such property, business or firm. (2) Notwithstanding the provision of clause (1), the Government shall, on an application being made in this behalf by all or any of the persons whose shares have not vested in the Government, partition such property, if capable of being partitioned, and determine the share or shares of such person or persons.