ADDENDA. 



A. Experiments at the Government Veterinary Research 



Laboratories, Pretoria ...... 



B. Venom of the Schaapsteker ..... 



C. More about Ringhals ....... 



D. A Boomslang Bite ....... 



E. The Isolation of Madagascar and Australia 



F. Potency of Mamba Venom ...... 



G. Anaphylaxis ........ 



H. Intravenous versus Subcutaneous Injection of Serum 



I. The Saline Solution. An Emergency Measure . 



J. Injecting Ammonia for Snake Bite .... 



K. Why do Snakes' Fangs Differ in Length ? Experiments 

 L. Items of Snake Knowledge ..... 



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ILLUSTRATIONS IN ADDENDA. 



FIG. 



A. Python ........ 



B. Boomslangs in cage at Port Elizabeth Museum 



C. Schaapsteker's head and fangs 



D. A handful of Schaapstekers .... 



E. Homalosoma snake and young 



F. Ringhals Cobra shamming death ... 



G. Ringhals Cobra with hood expanded and contracted 

 H. Ringhals Cobra rearing, showing side and back view 

 I. Boomslang inflating its throat 

 J. „ with body inflated .... 



K. „ and its eggs 



L. ,, showing close view of inflated neck and body 



M. Egg-eating snake and eggs . . . ' . 



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