TAELE OF CONTENTS. 



Preface 



List op Figures 



CnAPTER I. 



OBSERVATIONS ON THE HABITS OF THE CROTALUS WHEN IN CAPTIVITY. 



Inactivity of the Crotalus 



Habit of fasting 



Alode of artiOcial feeding 



Necessity for water 



Change of sliin 



Inflnence of the supply of water upon this process 



Question of the loss of fangs at this period 



Supposed power of fascination . 



Odor of the Rattlesnake 



CHAPTER II. 



ANATOMY OF THE VENOM APPARATUS. 



Osteology of the parts concerned 

 Myology of the parts concerned 

 Position of the venom gland 

 Weight of the gland as compared with 

 Capsule of the gland 

 Its suspensory and other ligaments 

 Receptacle of the poison 

 ^Microscopical anatomy of the gland 

 Course of the duct 

 Sphincter of the duct . 

 Structure of the fang . 

 Development of the fangs 

 Succession of fangs 



the lenj 



th and weight o 



f the snake 



6 

 Y 

 10 

 11 

 11 

 11 

 12 

 12 

 13 

 15 

 15 

 16 

 18 



CHAPTER III. 



PHYSIOLOGICAl MECHANISM OF THE BITE OF THE CROTALUS. 



Attitude of defence 



Forward motion of the body in striking 

 Distance at which the snake can strike . 

 Elevation of the fangs . 



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