were obtained for 2 months in 1953 and for 5 months in 1958. Mean temperatures 

 and range for each of the complete years of observations were as follows: 



Variations in salinites are shown in figure 6. Water samples for their deter - 

 nninations were obtained by immersing 4-oz. glass prescription bottles just below 

 the surface, rinsing thoroughly, refilling, and sealing caps with plastic electrician's 

 tape. Determinations were made by the Mohr-Knudsen titration method. Except 

 for the period June-November 1955, which was a prolonged dry spell, considerable 

 variation occurred between successive observations. Salinities ranged from 4.5^c 

 on June 5, 1957, to 36. 5%c on August 19, 1955. As would be expected in the relatively 

 shallow lagoon, changes in meteorological conditions were quickly reflected in 

 salinities and water temperatures. 



30 - . • .< 



20 - 



SALINITY 

 JUN 



.V./T* 



1954 » «« 



1955 - 



1956 



1957 ••• 



1958 X X X 



SALINITY 



Figure 6. --Salinities of water samples at culverts (August 1954 - May 1958). 



