THE HUMAN SPECIES 



CONSIDERED FROM THE STANDPOINTS OF 



COMPARATIVE ANATOMY, PHYSIOLOGY, PATHOLOGY 



AND BACTERIOLOGY 



BY 



LUDWIG HOPF 



AUTHORISED ENGLISH EDITION 



WITH 2l6 ILLUSTRATIONS AND ^ PLATES 



LONGMANS, GREEN, AND CO. 



39 PATERNOSTER ROW, LONDON 



NEW YORK, BOMBAY, AND CALCUTTA 



1 909 



