256 EYE SPY 
which may open up immortal fame to the chemist 
of the future. What is this mysterious essence 
which the wasp carries in its poniard ? As Pro- 
fessor Riley suggestively remarks, " If man could 
do what these wasps have done from time im- 
memorial, viz., preserve for an indefinite period 
the animals they feed on by the simple insertion 
of some toxic fluid in the tissues, he would be 
able to revolutionize the present methods of ship- 
ping cattle and sheep, and obviate much of the 
cruelty which now attends the transportation of 
live-stock and much of the expense involved in 
cold storage." 
