BASSIL v. KABBARA AND ANOTHER Practice and procedure—Pleading—Plea of limitation—Whether plea of limitation should be expressly pleaded as required by Order 19, r. 16—Whether failure to plead it amounts to waiver —Whether trial judge entitled to raise such plea on behalf of the defendant—Supreme [High] Court (Civil Procedure) Rules, 1954 (L.N. 140A), Order 19, r.16.