HAVING EYES, THEY SEE 37 



were liberated. Missing their blue land- 

 mark they buzzed confusedly about, not 

 knowing how to find the nest, until the 

 blue paper was replaced, when they all 

 went in. 



Once, red paper having been left over 

 the nest for twenty-four hours and then 

 moved a foot and a half away, many wasps 

 went through the hole in the paper as 

 usual, doubtless expecting to find the 

 nest entrance underneath it. 



The coloured papers were frequently 

 changed, and the wasps finally learned to 

 look for these changes, so that fewer and 

 fewer were deceived. 



Which proves that wasps are capable of 

 being educated, and suggests a new field 

 of experiment. 



A nest of trained hornets might not be 

 attractive to everybody, but it would be 

 interesting. 



The wasps, having learned to expect 

 different coloured paper porticos, were 



