you know, goes into fresh water in many places; these are 

 Enteromorpha intestinalis and Enteromorpha clathrata. 

 Rhizoclonium riparium and Rhizoclonium tortuosum are quite 

 characteristic of the edge of the salt marsh and are considered 

 brackish water forms. Ulothrix is the marine Ulothrix. The 

 Chrysophyte flagellate I do not know, and I do not know whether 

 anybody else does. The cryptomonads and rhodomonads are 

 usually associated with brackish water. All of these dinoflag- 

 ellates are more or less brackish water forms and are described 

 by Martin in an earlier paper on the dinoflagellates of Barnegat 

 Bay and the area around New Jersey. All of the diatoms are 

 typically marine or brackish water forms. Striatella and 

 Melosira are found out in our estuaries in great abundance. 

 Aghardiella is a red algae which is marine. Ectocarpus is a 

 brown which is marine. The Euglena, I think, is eutreptia, but 

 I am not sure. There are a numiber of euglenas showing up. 

 We used to say that all euglenas were fresh water. I think that 

 we have got to revise that. 1 have found euglenas in the mud 

 from the bottom of Buzzard's Bay. I do not know whether this 

 was a contamination or not. I still have a question mark back 

 of it. Peranema is a euglenophyte that is heterotrophic, and 

 it was found only once. As far as the protozoans are concerned 

 I am afraid I cannot help you out. 



Steers: 



You mention that the bottom of these pools sometimes is soft. 

 Can you tell us why? 



Moul: I am afraid not. Some of them are just like quicksand and 



others seem to have peat in the bottom and maybe have not 

 eroded as deeply as the others. 



Anderson: Were the temperatures in these pools taken at comparable times 



of day ? 



Moul: They were all taken at 12 noon or as near there as possible. 



That is one of the things 1 thought of at the time. If I had this 

 to do over there are a lot of things 1 would do that I did not do, 

 but I did try to take the temperatures at noon. 



Oppenheimer: (To Dr. Chapman) On your paper, when you were studying the 

 sediments, did you ever notice that the plants that were growing 

 in the marshes had any physical ability to separate out into 

 various types of particle sizes during sedimentation? In other 

 words, would one class of plants be able to separate out the 

 smaller particles by immobilizing the water as compared with 

 another community? 



Chapmian: No, 1 had not noticed that. It is a question that was raised yes- 



terday, actually, and it is an interesting point which I shall have 



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