18 FRIENDS WORTH KNOWING. 



snails at once seek out their habitual solitary retreats, and 

 must be looked for under leaves, logs, and loose stones in 



THE UNDER SIDE OF A VVKT 



the woods and pastures; at the roots of fern-tufts, lurk- 

 ing in the moss beside mountain brooklets; hiding in the 

 crevices of rocky banks and old walls, crawling over the 

 mud at the edge of swampy pools, creeping in and out of 

 the crannies of bark on aged trees, or clinging to the under 

 side of the leaves. Some forms are so minute that they 

 would not hide the letter o in this print, yet you will soon 

 come to perceive them amid the grains of mud adhering 

 to the lower side of a soaked chip. 



For fresh-water species, various resorts are to be searched. 

 Go to the torrents with rocky bottoms for the paludinas 



