PREFACE TO THE FIFTEENTH ENGLISH EDITION. 



IN this edition the entire work has undergone a careful revision. The 

 section on Embryology has been somewhat amplified, and its text rendered more 

 intelligible by the introduction of some sixty additional illustrations after His, 

 Kollmann, Duval, and others. Throughout the rest of the work a considerable 

 number of the diagrams have been redrawn and new illustrations here and 

 there added. 



The Editors are indebted to Dr. R. BOLAM, Lecturer on Physiology and 

 Histology, and to Dr. W. TURNBULL, Demonstrator of Anatomy, both of the 

 University of Durham College of Medicine, for their valuable help. The former 

 kindly undertook the revision of the chapter on General Anatomy or Histology ; 

 while the latter rendered great assistance in the revision and proof-reading of 

 some of the other portions of the work. 



It is hoped that this edition will maintain the reputation which the work has 

 for so many years enjoyed. 



