CONTENTS 



PREFACE 



Part I 

 CHAPTER I 



SCOPE OF THE SCIENCE OF BIOLOGY — THE FROG : PRELIMINARY 

 SKETCH OF ITS STRUCTURE, LIFE-HISTORY, AND VITAL 



FUNCl'IONS • . . . ... . I 



HINTS ON DISSECTION . . . 12 



CHAPTER n 



THE FROG {continued): GENERAL INTERNAL STRUCTURE . l6 

 PRACTICAL DIRECTIONS . . . . 3 1 



CHAPTER HI 



THE FROG (lOntinued) : THE SKELETON . . . . 35 



PRACTICAL DIRECTIONS . . 53 



CHAPTER IV 

 THE FROG (continued): the joints and muscles . . .55 

 PRACTICAL DIRECTIONS 64. 



CHAPTER V 



THE FROG {continued] : WASTE and repair of SUBSTANCE 



— THE DIGESTIVE ORGANS — NUTRITION 66 



PRACTICAL DIRECTIONS . 7& 



