First Published in 2002. This volume is part of the 'Outstanding Dissertations in Linguistics'series, and focuses on phonetics, phonology and diachrony of compensatory lengthening. The term compensatory lengthening (CL) refers to a set of phonological phenomena wherein the disappearance of one element of a representation is accompanied by a corresponding lengthening of another element. This study focuses on descriptive and formal similarities and divergences between CL of vowels triggered by consonant and by vowel loss.