viii TABLE OF CONTENTS 



PAGE 



D. HEART MUSCLE 92 



E. SMOOTH MUSCLE TISSUES 97 



F. PECULIAR FORMS OF MUSCLE 102 



CHAPTER IX 



A. THE ELECTRIC TISSUES 105 



B. THE ELECTRIC TISSUES OF ELASMOBRANCH FISHES . . . .108 



C. HlSTOGENESIS OF THE ELECTRIC TISSUES OF ELASMOBRANCHS . 113 



D THE ELECTRIC TISSUES OF TELEOST FISHES 115 



CHAPTER X 



THE TISSUES OF LIGHT PRODUCTION 122 



CHAPTER XI 



THE TISSUES OF HEAT PRODUCTION 141 



CHAPTER XII 



A. THE CIRCULATORY TISSUES FOR DISTRIBUTION AND COLLECTION . 143 



B. THE CIRCULATORY CHANNELS 149 



C. THE CIRCULATORY MEDIA 162 



D. THE BLOOD-FORMING GLANDS 166 



CHAPTER XIII 



A. THE NERVE TISSUES: THE NEURON 174 



B. THE NERVE CELL 179 



C. THE NERVE FIBER 187 



D. THE MOTOR NERVE ENDING 191 



E. NEUROGLIA AND GANGLION STRUCTURE 196 



F. THE TISSUES OF TOUCH OR TACTILE TISSUES 200 



G. THE TISSUES OF EQUILIBRATION OR STATIC TISSUES .... 207 

 H. THE TISSUES OF HEARING OR AUDITORY TISSUES . . . .215 



I. THE TISSUES OF SIGHT OR VISUAL TISSUES 224 



J. THE TISSUES OF TASTE AND SMELL OR GUSTATORY AND OLFACTORY 



TISSUES 258 



CHAPTER XIV 



PIGMENT TISSUES 269 



CHAPTER XV 



A. THE ALIMENTARY TISSUES: INTRA-CELLULAR FORMS OF DIGESTION . 279 



B. MASTICATION 287 



