370 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



Explanation of Plate and Charts. 



Chart V. — Chart of the sea near Morecambe, shewing 

 mussel beds and sewers, 



Chart VI — Similar chart of the Conway Estuary. 



Plate X. — Three cultures made by inoculating 

 1 c.c. of river water in neutral red, bile-salt lactose agar. 

 Photograph by A. Scott, slightly reduced. 



