AMMOPHILA AND HER CATERPILLARS 



the earth into place with it, hammering now here and 

 now there until all was level. Once more the whole pro- 

 cess was repeated, and then the little creature, all un- 

 conscious of the commotion that she had aroused in 



AMMOPHILA URNARIA USING STONE TO POUND DOWN EARTH 

 OVER NEST 



our minds, unconscious, indeed, of our very existence 

 and intent only on doing her work and doing it well, 

 gave one final, comprehensive glance around and flew 

 away. 



We are claiming a great deal for Ammophila when we 

 say that she improvised a tool and made intelligent use 

 39 



