John Archibald Campbell, Bell v. City of Vicksburg — Opinion of the Court
“ But the defendant contends that it is the office of a demurrer to call in question the sufficiency of a declaration or other pleading upon what appears upon its face, without reference to any extrinsic matter; that the affidavit is not a part of the plea; it is only that which is necessary to authorize the plea to be placed on file, and it may be waived either expressly or by implication. The filing of the plea is only irregular, and a demurrer or replication to it is a waiver. ”
