6 PREFACE. 



Those numbered from 2 to 8 in tlie Table of Contents 

 are given in the order of their preparation, covering 

 the years 1890 to 1896. 



I am indebted to Dr. E. D. Glark and Dr. C. E. 

 Ferguson for aid in revising the manuscript, and to 

 Dr. A. W. Brayton for constant encouragement and 

 assistance in the preparation and arrangement of the 

 book. 



Should the presentation of these essays in book 

 form be as kindly received by others as most of them 

 have already been by my friends, the doctors of In- 

 diana, it will be all that the author can ask. 



Indianapolis, 



February, 1898. 



