Xll TABLE OF CONTENTS. 



SECOND CHAPTER. 



HISTORY OP THE PRINCIPAL SYSTEMS. 



PACK 



Earliest essays, Aristotle, 337 . 597 



More recent ones, 338343 . 598 



Zootomical systems, 344349 . 608 



Physiological systems, 350 352 . 617 



THIRD CHAPTER. 



Nomenclature, 353363 624 



