Per Curiam.
The rule is invariable, that causes of action, which admit of the same plea and the same judgment, may be joined; but the converse of this proposition is not invariably true. Debt on specialty, or debt on judgment, may be joined with debt on simple contract, although they require different pleas* (1 Chit. Plead. 197. 2 Saund. 117. note 2.) Judgment for the plaintiffs.