:i4! Puget Sound Marine Sta. Pub. Vol. 1, No. 6 



and at the end of two weeks they were alive and seemingly healthy, 

 but had not grown much. 



These experiments indicate that Enteromorpha intestinalis can live 

 and grow for five weeks in fresh water, and even thrive better than in 

 salt water; that Prionitis lyallii, Rhodomela larix and Fucus evanescens 

 can endure fresh water longer than can Nereocystis, Desmarestia aculeata, 

 Laminaria saccharina and Cymathaere triplicata. 



Thus algae vary greatly in their ability to live in fresh water. Just 

 how the saltiness of the water affects the cells was not determined. It 

 is surmised that Enteromorpha intestinalis would be found in fresh water 

 were it not for the bacteria. 



