1. Apparatus for applying an array of surgical fasteners to body tissue comprising: a plurality of surgical fasteners in a predetermined array, said array being subdivided into first and second subarrays; first and second pusher means for respectively pushing the fasteners in the first and second subarrays into the tissue; first means for supplying the work required for pushing the fasteners into the tissue; and second means for optionally transmitting the work supplied by the first means to either the first and second pusher means together or to the first pusher means only.