This volume was written to fill the need for a synthesis of the research that has illuminated much of the phonetic and morphological development of Spanish. Contents: On the Nature of Linguistic Change: Sound Change and Sound Laws, The Spread of a Sound Change, Causes of Sound Change, and Morphological Change: Analogy; The Latin Language; From Earlier to Later Latin; From Late Latin to Old Spanish; From Medieval to Modern Spanish; References; & Word and Morpheme Index. Illustrations. Third printing.