57 C.L.R.] OF AUSTRALIA.
But the alteration even in a material particular of a document
does not avoid it in all cases and for all purposes. For example,
where a deed is avoided by a material alteration without the consent
of another party to the deed, the avoidance of the deed is not retros-
pective and it does not have the effect of revesting any estate or
interest in property which has already passed by the deed (See
Ward y. Lumley (1) ). Further, the effect of the avoidance of a
deed (or other document - Master v. Miller (2)) by a material
alteration is only "' to prevent the person, who has made or authorized
the alteration, and those claiming under him, from putting the deed
in suit to enforce against any party bound thereby, who did not
consent to the alteration, any obligation, covenant, or promise
thereby undertaken or made." (Halsbury's Laws of England, 2nd
ed., vol. 10, p. 227). The same rule is stated in Norton on Deeds,
2nd ed. (1928), p. 38, in the following terms: " If a material altera-
tion by erasure, interlineation or otherwise, be made, after execution,
in a deed by, or with the consent of, any party thereto, he cannot
as plaintiff enforce any obligation contained in it against any party
who did not consent to such alteration." In this case the defendant
is not seeking to enforce against anybody any obligation, covenant
or promise. The law with respect to avoidance of documents by
material alterations is not applicable.