ADDENDA. 



A. Experiments at the Government Veterinary Research 



Laboratories, Pretoria ....... 483 



B. Venom of the Schaapsteker ...... 486 



C. More about Ringhals ........ 490 



D. A BooMSLANG Bite ........ 492 



E. The Isolation of Madagascar and Australia . . . 494 



F. Potency of Mamba Venom ....... 496 



G. Anaphylaxis ......... 499 



H. Intravenous versus Subcutaneous Injection of Serum . 504 



I. The Saline Solution. An Emergency Measure . . . 506 



J. Injecting Ammonia for Snake Bite ..... 508 



K. Why do Snakes' Fangs Differ in Length ? Experiments . 510 

 L. Items of Snake Knowledge . . . . . -514 



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 ..... 



484 

 487 

 490 

 493 

 495 

 497 

 500 



505 

 507 

 509 

 511 

 515 

 518 



