EXPERIMENTAL STUDY OF THE OYSTER GILL 

 Table 5. — Temperatures at which the oysters begin to produce a current 



23 



Another question that requires examination is whether the hibernating oysters 

 would respond to the increase in temperature in the same manner as they do in spring 

 or summer. In order to answer this question two experiments were performed at 

 Woods Hole on February 14 and 15, 1927. The oysters were taken directly from the 

 harbor and the rate of flow of water through their gUls was measured with the car- 

 mine method. The results of these experunents are shown in Table 6 and Figure 8. 



3.0 



2.5 



o 



3: 2.0 



oc 



1.5 



1.0 



oc: 



0.5 



• EXPER1^ENT— 83 



a •«;:. .ir:-85 



7 



TEMPERATURE" C 



Fig. 8.— Effect of temperature on the rate of flow of water. Two experiments with hibernating oysters 



