Chap. II. 



THEIR INTELLIGENCE. 



93 



Nature of Object. 



Petioles of a Clematis, somewhat 

 pointed at the apex, and 

 blunt at the base 



of the Ash, the thick basal 

 end often drawn in to serve 

 as food .... 



' of Robinia, extremely thin, 



especially towards the apex, 

 so as to be ill-fitted for 

 plugging up the burrows . 



Triangles of paper, of the two sizes . 



' of the broad ones alone 



of the narrow ones alone 



Drawn 



in, by or 



near the 



base. 



24 



51*5 



56 

 23 

 16 

 21 



If we consider these several cases, we can 

 hardly escape from the conclusion that worms 

 show some degree of intelligence in their 

 manner of plugging up their burrows. Each 

 particular object is seized in too uniform a 

 manner, and from causes which we can 

 generally understand, for the result to be 

 attributed to mere chance. That every object 

 has not been drawn in by its pointed end, 

 may be accounted for by labour having been 

 saved through some being inserted by their 

 broader or thicker ends. No doubt worms 



