CHAP. II. THEIE INTELLIGENCE. 69 



the base with a well-developed foot-stalk. 

 They are thin and quite flexible when half- 

 withered. Of the 70, 79 per cent, had been 

 drawn in by or near the tip; 4 per cent, 

 by or near the base ; and 17 per cent, trans- 

 versely or by the middle. These proportions 

 agree very closely, as far as the tip is con- 

 cerned, with those before given. But the per- 

 centage drawn in by the base is smaller, which 

 may be attributed to the breadth of the basal 

 part of the blade. We here, also, see that the 

 presence of a foot-stalk, which it might have 

 been expected would have tempted the worms 

 as a convenient handle, has little or no in- 

 fluence in determining the manner in which 

 lime leaves are dragged into the burrows. 

 The considerable proportion, viz., 17 per 

 cent., drawn in more or less transversely 

 depends no doubt on the flexibility of these 

 half-decayed leaves. The fact of so many 

 having been drawn in by the middle, and of 

 some few having been drawn in by the base, 

 renders it improbable that the worms first 

 tried to draw in most of the leaves by one or 

 both of these methods, and that they after- 

 wards drew in 79 per cent, by their tips ; 



G 2 



