What is CITATIO AD REASSUMENDAM CAUSAM

A summons to take up the cause. A process, in the civil law , which issued when one of the parties to a suit died before its determination , for the plaintiff against the defendant’s heir, or for the plaintiff’s heir against the defendant, as the case might be; analogous to a modern bill of revivor . Citatio est de juri natural!. A summons is by natural right Cases in Banco Regis Wm. III. 453