PKEFACE. vii 



sound general principles, but also that it is, at the same time, less cumbrous and 

 more definitely instructive than the terminology previously in use in this country. 



One of the recognised functions of a preface is to give the editor the 

 opportunity of expressing his thanks to those who have assisted in the production 

 of the work, and I gladly avail myself of this function. 



My thanks are due to all the authors for their courtesy and consideration. To 

 Mr. J. Keogh Murphy, F.K.C.S., for the preparation of an extremely useful glossary 

 and index, and for ever-ready help and many valuable suggestions. To Dr. E. B. 

 Jamieson for assistance in the revision of the text, and for the preparation of 

 specimens from which some of the new illustrations were made. 



I am also greatly indebted to Professor Keibel, and to Mr. Gustav Fischer of 

 Jena for permission to copy eight figures from Normentaflen zur Entwicklungs- 

 geschichte des Menschen ; to Professor Gustav Ketzius for permission to use 

 figures from his monographs; and to Professors Mall, Felix, and Tandler for 

 permission to utilise the results of their work in the preparation of diagrams. 



Most of the new figures in this edition have been drawn by Mr. J. T. 

 Murray with his usual skill and appreciation, and the remainder have been prepared 

 by Mr. Frank Butterworth from designs made by the authors of the articles in 

 which the figures appear. 



AETHUE EOBINSON. 



EDINBURGH, April 1913. 



PREFACE TO THE FOURTH EDITION, REVISED. 



THE whole of the text of this edition has been carefully revised, and alterations 

 which seemed to be necessitated by advancing knowledge have been made. 



As in the case of the fourth edition I am greatly indebted to Dr. E. B. 

 Jamieson for his invaluable assistance. 



AETHUE EOBINSON. 



October 6. 1914. 



PREFACE TO THE FOURTH EDITION, THIRD 

 IMPRESSION, REVISED. 



THE whole of the text has again been revised, and mistakes to which attention has 

 been directed have been corrected. 



Notes have been appended to some of the sections drawing attention to the 

 bearing of recent observations on statements made in the text. 



Parts of the Vascular System have been rewritten, and in that section some of 

 the old figures have been replaced, partly by drawings made by Mr. J. T. Murray 

 from recent dissections, and partly by diagrams illustrating points not well shown 

 by dissections. 



I am indebted for the dissections from which the drawings were made to 

 Dr. E. B. Jamieson and Mr. A. E. Maclean. 



AETHUE EOBINSOK 



June S, 1917. 



