2. In actions upon contracts, where the contract has been made, with several, if their interest were joint, they miist all, if living, join in the action for its breach. 8 S., & R. 308; 10 S. & R. 257; Minor, 167; Hardin, 508. In such case the non joinder must be pleaded in abatement. Id.; 3 Bouv. Inst. n. 2749.