LIST OF ILLUSTRATIONS 



Fig. 55- Dissectionof the roof of the pharynx of Scylliumcanicula, 

 showing the efferent branchial arteries 



56. Urogenital systems of male and female of Scyllium 

 canicula ...... 



57. Dissection showing the brain, spinal cord, cranial, 

 occipital and anterior spinal nerves of Scyllium canicula 



58. A series of views of the lower pole of the Frog's ovum . 



59. Sagittal sections through developing ova of the Frog 



60. Three views of different developmental stages of the Frog 



61. Two transverse sections through a young embryo of the 

 Frog ...... 



62. Transverse section through an older embryo 



63. Longitudinal section through an embryo of the Frog 



64. Two horizontal sections through the head and anterior 

 part of the body of Tadpoles of different ages . 



65. A Tadpole of the Frog at the time of hatching . 



66. The cranial and visceral cartilages of the Tadpole 



67. Transverse sections showing the development of the 

 Frog's heart 



68. Diagrams of the arterial arches of the Tadpole and the Frog 



69. Diagrams of the excretory system of the Tadpole 



70. Section through the eye of a Tadpole 



71. Diagrammatic section through the skin of a Mammal 



72. Tympanic membrane and auditory ossicles of the human 

 ear ....... 



73. Diagram illustrating the development of the arterial 

 arches of Mammals 



74. Diagrams of the urogenital system of Mammals 



75. Diagrams illustrating the development of the blastocyst 

 • and formation of the placenta in Mammals 



76. Diagrammatic transverse section of a pregnant uterus 

 illustrating an early stage of placentation 



77. Diagrammatic transverse section of a pregnant uterus 

 illustrating the later phase of placentation 



XV 



I'AGE 

 226 



251 



253 

 257 



259 

 261 

 263 



26s 

 267 

 269 



271 



274 

 276 

 281 

 285 



291 



299 

 303 

 30s 

 306 



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