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 downwards 

 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. 



