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 httle 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 



