diachronica xv 1 spring 1998 issue diachronica vol 15 1 published contains _ articles _ michel ferlus les syste mes de tons dans les langues vietmuong martin haspelmath semantic development old presents new futures subjunctives without grammaticalization tomas riad origin scandinavian tone accents donald winford origins african american vernacular english creolist perspective part ii linguistic features _ reviews _ gary bevington words comes introduction etymology rev rex wallace jose del valle el trueque x en el espan ol antiguo rev dieter wanner gereon franken systematische etymologie untersuchung einer mischsprache beispiel des shakespeare wortschatzes rev terence odlin andreas jucker historical pragmatics rev nick nicholas christian lehmann thoughts grammaticalization rev bernard comrie _ miscellenea _ j c smith report 13th international conference historical linguistics saul levin reply bomhard review levin 1996 _ publications received _ subscription information contact john benjamins publishers customer services benjamins nl submission information contact konrad koerner koerner uottawa ca brian joseph bjoseph ling ohiostate edu