CONCLUSIONS. 155 
authors as non-venomous, and others as only very slightly 
venomous. Now, the fact of the Boomslang having been proved 
to be very highly venomous shows that at least one of this class 
of Hind-fanged snakes possesses highly-specialised venom capable 
of destroying human life, therefore it is reasonable to assume a 
good many of the others would be found, on investigation, to 
be equally venomous. Until each individual snake of this class 
has been carefully experimented with, it would be unwise to lead 
the public to infer they were either harmless, or only venomous 
to a very slight degree. This opens up a wide field for experi- 
mental work, for there are over three hundred species of the 
Back-fanged Division of Snakes in the various snake-infested 
countries. 
Norte.—Further information and illustrations about Boomslangs will be 
found in the Addenda at the end of this book. 
