CONTENTS. 



Page. 



Preface "i. 



Introductory ^^ 



I. Systematic Position of Venomous Snakes i~3 



II. Morphology of Venomous Snakes 4~45 



Family Colubridae 4 



Opisthoglypha 4 



Subfamily Dispsadomorphinae 4 



Subfamily Elachistodontinse lo 



Subfamily Homalopsinse lo 



Proteroglypha ii 



Subfamily Elapinse n 



Subfamily Hydrophiinae 26 



Family Viperidae 29 



Subfamily Viperinae 3° 



Subfamily Crotalinae 35 



III. Phylogeny of Venomous Snakes 46-51 



IV. Geographical Distribution of Venomous Snakes 52-57 



V. Poison Apparatus of Venomous Snakes S^^^Q 



Poison Fangs 5° 



Poison Glands 59 



The Process of Secretion of Venom 63 



Djmamics of the Function of Poison Apparatus 64 



The Bite 67 



VI. Toxic Secretions of Venomous Snakes 70-76 



Amounts of Venom Secreted 7° 



Toxicity of Snake Venom 7^ 



Mortality Caused 75 



VII. Physical and Chemical Properties of Snake Venom 77~93 



Chemical Nature of Snake Venom 79 



VIII. Effects of Various Physical and Chemical Agents upon Snake Venom 94-102 



Effects of Physical Agents 94 



Effects of Various Chemicals 96 



IX. Effects of Ferments upon Snake Venom io3~^°5 



X. Symptoms of Venom Poisoning in man 106-1 1 2 



The Viperidae i°6 



Crotalus Poisoning in Man i°6 



Lachesis Poisoning in Man 1°^ 



Daboia Poisoning in Man ^°^ 



Ecltis carinala Poisoning in Man 



Vipera berus Poisoning in Man 



The Colubridae ■ 



Cobra Poisoning in Man 



Bungarus caruleus Poisoning in Man 



Bite of Australian Species of Snakes 



Elaps fulvius Poisoning in Man 



Post-mortem Examination 



Various Symptoms of Snake Poisoning Encountered in Man 



XI. Experimental Venom Poisoning in Animals 



The Viperidae 



Crotalus adamanteus 



Ancistrodon 



Lachesis 



Vipera 



Echis 



Colubridae 



Naja 



