The book provides insights into the realm of unscheduled parliamentary communication. Authentic records of debates are drawn upon to filter out and typify interjections with reference to characteristic techniques, syntactic structures, provocation cues, and speech-act forms. The typologies thus obtained help to classify and quantify the various instances of actual interjection and to establish a historical and comparative foundation for a discussion of ongoing change in interjectory communication in German parliaments. Special chapters are devoted to >mini-dialogues< between speakers and interjectors, interjectory questions, and specific responses to women speakers.