STUDIES IN MARINE ECOLOGY. 



231 



Table X. 



Showing the Temperature, Oxygen Content, Salinity and pH of the 

 Water over the Scoloplos acutus Association. 



Collections marked "S" are from the surface; "B," are from the bottom; 

 'M" are from six inches below the surface. Collections not otherwise labeled 

 are from the bottom. 



a. Collection No. 75, although taken after No. 74, was from further inshore 

 and represents an earlier stage in the rising tide. 



b. 21 at surface. 



c. Same at surface. 



