“…The influence of temperature, salinity, dessication, pH, and polluted water on the assimilation rate of various marine plants has been studied by several authors (Legendre, 1921;Montfort, 1931;Gessner andHammer, 1960, 1971;Schwenke, 1960;Blinks, 1963;Munda, 1963Munda, , 1974Ogata and Matsui, 1965;Nellen, 1966;Hammer, 1968Hammer, ,1969Gessner, 1969;Biebl and McRoy, 1971;Mathieson and Burns, 1971;Ogata and Schramm, 1971;Burns and Mathieson, 1972. Artifical sea water or natural sea water diluted with distilled water was used in most of these experiments.…”