176 THE ESSEX NATURALIST
REFERENCES
Hustedt, F. (1930). In Pascher, A., Susswasserflora Mitteleuropas.
11. Bacillariophyta.
Round, F. E. (1957). A note on some diatom communities in calcar-
eous springs and streams. J. Linn. Soc, Lond., 55, 662-668.
Table 1. List of diatoms from the River Lee.