Section XVI. And it is hereby enacted, that no will or codicil, or any part there of shall be revoked otherwise t

XVI. And it is hereby enacted, that no will or codicil, or any part there of shall be revoked otherwise than as aforesaid, or by another will or codicil executed in manner hereinbefore required, or by some writing declaring an intention to revoke the same, and executed in the manner in which a will is hereinbefore required to be executed, or by the burning, tearing or otherwise destroying the same by the testator or by some person in his presence and by hi direction with the intention of revoking the same.