VI PREFACE. 



student, and this volume is designed to pave the way for their 

 appreciation. 



I desire to record my high appreciation of the aid of Drs. Charles 

 T. Jewett, Egbert Le Fevre, E. Eliot Harris, Milton Turnure, 

 H. Pereira Mendes, J. Gorman, A. M. Lesser, J. Alexander Moore, 

 Robert Roberts, Esq., Warden, and Mr. John Burns, Clerk of 

 Charity Hospital, in facilitating my access to valuable tissue for 

 the illustrations and for my own studies. 



My thanks are due my First Assistant, Dr. F. T. Reyling, for his 

 indefatigable efforts in furthering the work ; and to Mr. A. J. Drum- 

 mond, for photographical favors. 



MAURICE K MILLEfe. 

 NEW YORK, June 1st, 1887. 



