sea-fisheries laboratory. 135 



Explanation of the Charts. 

 Plate I. 



Represents the results of Experiment 2, 1906, and 

 Experiment 1, 1907. The small red circles indicate the 

 approximate places of recapture of the plaice returned 

 during 1906 ; the filled-in red circles indicate the positions 

 of recapture of the plaice liberated in this experiment and 

 recaptured during 1907. The numbers within the circles, 

 or outside them in the cases of the 1907 recaptures, indicate 

 the months in which the fishes were recaught. The 

 straight lines do not indicate migration paths, but relate 

 the fish recaptured to their positions of liberation. 



Plate II. 



Represents the results of Experiments 3 and 4, 1907. 

 The open black circles relate to the plaice liberated off 

 Nelson Buoy in July, 1907. The filled-in black circles 

 indicate the approximate positions of recapture of plaice 

 liberated near Nelson Buoy in 1906 and recaptured in 1907. 

 The open red circles indicate the positions of recapture of 

 the plaice liberated in Beaumaris Bay in October, 1907. 

 The filled-in red circles indicate the recaptures of plaice 

 liberated in Red Wharf Bay in September, 1906, and 

 recaught either at the end of last year or during 1907. 



In both charts the numbers outside the circles are the 

 numbers of the labels. To avoid confusion, however, these 

 have been omitted in the case of Experiment 4. 



