Section 14

No will or any part thereof shall be revoked otherwise than as aforesaid, or by another will 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 his direction, with the intention of revoking the same.