Frontmatter -- CONTENTS -- FOREWORD -- AUTHOR'S INTRODUCTION -- PART I: PROBLEMS -- GENETIC RELATIONSHIP -- SOUND CHANGE -- PHONOLOGICAL RECONSTRUCTION -- INTERNAL RECONSTRUCTION -- SUBGROUPING -- PART II: SOLUTIONS -- SOLUTIONS TO GENETIC RELATIONSHIP PROBLEMS -- SOLUTIONS TO SOUND CHANGE PROBLEMS -- SOLUTIONS TO PHONOLOGICAL RECONSTRUCTION PROBLEMS -- SOLUTIONS TO INTERNAL RECONSTRUCTION PROBLEMS -- SOLUTIONS TO SUBGROUPING PROBLEMS -- APPENDIX: A SURVEY OF WORKBOOKS AND TEXTBOOKS IN HISTORICAL LINGUISTICS WITH REFERENCE TO PROBLEM-SOLVING -- REFERENCES