Jl. 



\ H 



H 1 H 



NUMBER DYING 



H h 



TEMPERATURE 



-I h 



1 1 1 1 \ 1 1- 



SEPT. OCT. NOV. DEC JAN FEB MAR APR MAY JUNE 



1952 1953 



Fig. 1. --Temperature ( CI, chlorinity (p. p. m. ), and mortality (number offish 

 dying) in Pond No. 5 os'er rhe period from September 1, 1952 to June 30, 1953. 



