THE FKESII-YVATEK AQUAIIIUM. ,4:7 



worts are also common pond plants. They may be trans- 



Callitriche Autumnalis— (Narrow-leafed Starwort.) 



planted to the tank with ease, and thrive satisfactorily in 

 confinement. Their leaves invariably assume a singular 

 position on the surface of the water, forming a number of 

 handsomely shaped asteroids, or small stars. On the 

 leaves, if examined by a microscope, may be observed 

 minute, rosette-shaped excrescences, that appear to be 

 substitutes for the hairs on other plants. 



No. 5. River Weed, may be looked for on rocks and 

 stones at tbe bottom of small streams in New Jersey. 



