(12th Ed.) 717. et seqg.—Double voucher. This was when a common recovery was had, and an estate of freehold was first conveyed to any indifferent person against whom the precipe was brought, and then he vouched the tenant in tail, who vouched over the common vouchee. For, if a recovery were had immediately against a tenant in tail, it barred only the estate in the premises of which he was