58 THE EVOLUTIONIST AT LARGE. 



ance among low water-logged meadows, or 

 under the damp fallen leaves of moist copses. 

 The intermediate kinds inhabit the inter- 

 mediate places. Yet to the last even the 

 most thorough-going snails retain a final trace 

 of their original water-haunting life, in their 

 universal habit of seeking out the coolest 

 and moistest spots of their respective habitats. 

 The soft-fleshed mollusks are all by nature 

 aquatic animals, and nothing can induce them 

 wholly to forget the old tradition of their 

 marine or fresh-water existence. 



