INTRODUCTION 3 



biochemical chapter. Sir H. Anderson and Professor Ashworth have 

 also given me the beneiit of their special knowledge in other parts of 

 the work. To all these I am under obligations. I wish also to tender 

 my thanks to those authors and publishers who have kindly allowed 

 me to reproduce illustrations from their respective works, as well as 

 to record my indebtedness to lAie following, who have been of service 

 by giving me information, important references, or assistance in other 

 ways : — Dr. Nelson Annandale, Superintendent of the Indian Museum, 

 Calcutta ; Dr. W. Blair Bell, of Liverpool ; Dr. Eagle Clarke, lately 

 Superintendent of the Scottish National Museum; Professor J. C. 

 Ewart, of the University of Edinburgh; Professor J. P. Hill, of 

 University College, London ; Dr. A. C. Haddon, of Christ's College ; 

 Professor W. A. Jolly, of the University of Cape Town ; Dr. Janet E. 

 Lane-Claypon, of London ; Mr. D. G. Lillie, of St. John's College ; Mr. 

 K. J. J. Mackenzie, of Christ's College ; Mr. P. A. Potts, of Trinity 

 Hall; Professpr C. G. Seligman, of London; and Sir Arthur E. 

 Shipley, Master of Christ's College. Lastly, I wish to acknowledge 

 the assistance of Dr. C. H. Crawshaw, of Christ's College, in the 

 correction of the first proofs, as well as to express my obligations to 

 Mrs. Hingston Quiggin for the willing labour she expended in 

 preparing the index and finally revising the text of the first edition, 

 and to Mr. Richard Muir for the skilful manner in which he 

 executed those drawings which were new. 



