(1)  A disposition of the residue of the estate of a testator, or of the whole of the estate of a testator, that refers only to the real estate of the testator, or only to the personal estate of the testator, is to be construed to include both the real and personal estate of the testator.

(2)  If any part of a disposition in fractional parts of the whole or of the residue of the estate of a testator fails, the part that fails passes to the part that does not fail, and, if there is more than one part that does not fail, to all those parts proportionately.

(3)  This section does not apply if a contrary intention appears in the will.