THE UNSEEN GOAL 277 
tensify as well as expression, it seems quite legi- 
timate to suggest that worker-ants and worker-bees, 
for instance, may find some compensation for their 
spinsterdom in their generous vicarious mother- 
hood. And apart from all guesses, the interest- 
ing fact has now been established for some wasps 
(as we have already noticed), and for some ants 
(as Professor Wheeler has recently proved), that 
nurses and mothers alike may receive from the 
larve which they feed and tend drops of an elixir 
that seems to serve as an extraordinarily stimu- 
lating encouragement or reward on the path of 
virtue. 
