66 SEA MOSSES. 



constricted at the joints. In drying, the plant fades a 

 little, but keeps its glossy look, and as the chlorophyl 

 collects at the ends of the cells it gets a variegated 

 appearance, an alternation of light and dark points 

 along the thread. It is common along the whole 

 coast. It grows in deep water five or six fathoms 

 down, and so must be sought for among the cast up 

 sea weeds, or floating on the surface of the water. 

 Mr. Collins found it in tide pools, at Revere, in the 

 spring, but it may be found all summer. It does not 

 adhere to paper. 



Ch^tormorpha tortuosa, Dillw. 



You will find upon the rocks, or upon the Algae 

 growing on them, mats of green wool, spread out or 

 rolled up. This is C. tortuosa. Its filaments are very 

 fine, finer than human hair, densely interwoven and 

 felted together into rolls, or spreading mats. It 

 does not colapse when taken from the water. It is 

 common at Nahant, Marblehead, and Nantasket, and 

 northward in midsummer. My specimens have adhered 

 very well to paper. It is not uncommon in California. 



K^ bi^ '^'- j's^'s^' 



