PLATE X. A FRESH-WATER POOL. 



Showing on the surface Water-Lilies, Duckweed, some insects (Water- 

 Measurers) gliding on the surface, a Water-Snail gliding back down- 

 wards below the surface-film. Below may be seen a Crested Newt, 

 two Water-beetles (Dytiscus), a Water-Spider and her dome-like 

 Web; also a Sponge growing on the bulrush. 



