This treatise is printed in substantially the same form in which it was presented to the faculty of Yale University as a doctor’s thesis. The subject was suggested by Professor E. P. Morris, and the study was carried on under his direction. To him, and to Professor Hanns Oertel, who made helpful suggestions, the author is under obligation not only for the method employed but also for the general theory underlying the whole study. The writer also wishes to thank Professor S. L. Whitcomb, the editor of this series, for valuable help in preparing the work for publication. E. D. C. Lawrence, Kansas, Jan. 1, 1915. CONTENTS CHAPTER I Introductory 7 CHAPTER II Influence of Stem-Meaning 10 I. -Mentum. A. Concrete -mentum Words on Verb Stems. 1. Nouns denoting result of action, with general application 10 2. Nouns denoting result of action, with restricted application 11 3. Nouns denoting instrument, with general application 12 4. Nouns denoting instrument, with both general and figurative application 13 5. Nouns denoting instrument, with specialized application 14 6. Nouns denoting instrument, with both specialized and figurative application 15 7. Nouns not classified 16 B. Concrete -mentum Words on Noun and Adjective Stems 17 C. Abstract -mentum Words on Verb Stems. 1. Nouns denoting result of action 18 2. Nouns denoting instrument 20 3. Nouns denoting action 22 D. Abstract -mentum Words on Noun Stems 23 II. -Bulum. 1. Nouns denoting instrument 24 2. Nouns denoting place 25 3. Nouns denoting person 26 III. -Culum. A. Concrete -culum Words. 1. Nouns denoting instrument 27 2. Nouns denoting place 29 3. Nouns denoting object of action 30 B. Abstract -culum Words, All Denoting Action 30 CHAPTER III Influence of Context 32 CHAPTER IV Overlapping of Suffixes 43 A. Parallels of -mentum and Accessory Suffixes 44 B. Parallels of -bulum and Accessory Suffixes 49 C. Parallels of -culum and Accessory Suffixes 50