FIELD BOOK OF PONDS AWD STREAMS 



it can then be followed to the chapter where it is described 

 more particularly. Only common names are used here; later, 

 common and Latin names are both given. Following the ta- 

 ble is a discussion of water as a home, a chapter on the com- 

 munity life in water and another chapter on how to find water 

 animals. 



miM 



Fig. I. — Most of these ani- 

 mals I -celled and microscopic 

 or nearly so. A. — Plant-like, 

 single cells or chains of cells, 

 often in conspicuous green 

 masses; B. — Microscopic, i- 

 celled animals. 



Simpler plants and animals 

 (p. 46). 



Fig. 2. — Typical plants 

 with roots, leaves, and flowers 

 often minute, sometimes con- 

 spicuous. Submerged in the 

 water, floating on the surface 

 or rising above it. 



Higher plants (p. 58). 







*'Vt% 



^r>-'>ji 



'-iSi.i 







Fig. 3. — Flattened green or 

 yellowish masses (animal) on 

 submerged stones, sticks and 

 plants. 1-6 inches across. 



Sponges (p. 104). 



Fig. 4. — Thread-like, white 

 or green animals hanging 

 from sticks and stones in 

 quiet water. About one- 

 quarter inch long. 



Hydras (p. 112). 



