A BOOMSLANG BITE. 491 
was the case with Willams. For two years after recovery, 
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Fic. D.—A few of the author’s live Schaapstekers, by the aid of which he demonstrated that 
their venom, weight for weight, was as potent in its death-dealing properties as that of 
the cobra, 
The two with straight lines down their bodies are commonly known as Crossed Grass Snakes 
(Psammophis crucifer). The others are Rhombic or Spotted Schaapstekers (Trimero- 
rhinus rhombeatus). 
Pretorius suffered from giddiness and mental torpor whenever 
the weather was unusually warm. To prevent himself falling 
