Includes bibliographical references (pages 153-162) and index
1 - Introduction -- - 2 - Preliminaries -- - 3 - Linguistic areas and diffusion -- - 4 - The family tree model -- - 5 - Modes of change -- - 6 - The punctuated equilibrium model -- - 7 - More on proto-languages -- - 8 - Recent history -- - 9 - Today's priorities -- - 10 - Summary and prospects -- - App - Where the comparative method discovery procedure fails