THE FORAMINIFERA. OF THE EXE ESTUARY. 



341 



100 

 Sample dredged from bottom of Exmouth Docks : consists of a fine 

 sand mixed with much silt and organic matter ; general appearance a 

 somewhat sticky mud. In this case there is an entire absence of 

 tidal scour or wind wash, and a constant depth of water. On the 

 otlier hand, the water of the dock is by no means so clear or pure 

 as in the channel outside the gates. 



FORAMINIFERA COUNTED IN 13 C.GMS. 



It was impossible to take a satisfactory census in tliis manner. 



286 



From the relative floating capacity of the species it is obvious that 

 Botalia heccarii greatly predominates, and is followed by Nonionina 

 depressida. 



