VI 11 CONTENTS 



CHAPTER VI. 

 THE EYE AND EAR. 



PACK 



The Eye of the Frog. The Eye of the Sheep or Ox. Histology 



of the Eye. The Ear of the Frog 87-95 



CHAPTER VII. 



THE REPRODUCTIVE ORGANS AND THE CLOACA. 

 The Male Frog. The Female Frog 96-98 



CHAPTER VIII. 



DEVELOPMENT OF THE FROG. 



General Account. Formation of the Egg. Maturation of the 

 Egg. Fertilisation. Segmentation. Formation of the 

 Germinal Layers. Development of the Nervous System. 

 Development of the Sense Organs. Development of the 

 Alimentary Canal. The Gill Clefts and Arches. The 

 Vascular System. The Muscular System and the Coclom. 

 Development of the Skeleton. Development of the 

 Urinary System 99-150 



CHAPTER IX. 

 ELEMENTARY HISTOLOGY. 



Epithelium. Glands. Muscle. Connective Tissue. Carti- 

 lage. Bone 151-163 



CHAPTER X. 

 CELL DIVISION : DEVELOPMENT OF GERM-CELLS. 



The Changes during Cell Division. Development of the Germ- 

 Cells. Maturation of the Germ-Cells. Reduction of the 

 Chromosomes . 164-172 



iNDKX .... ... 173-180 



