Rule 2 Assignee in bankruptcy and recovery of land

claims by an assignee in bankruptcy as such shall not be joined with any claim by him in any other capacity;

no cause of action shall be joined with an action for the recovery of land except claims for mesne profits or arrears of rent or double value of the land claimed or any part thereof or for damages for breach of any contract under which it is held or for any wrong or injury to it or for payment of any principal money or interest secured by a mortgage or charge on that land or any part thereof.