118 



BULLETIN OF THE BUREAU OF FISHERIES 



in this manner was very small; usually none went through; on some occasions one, 

 two, or three; and the largest number observed to go through in six hours of observa- 

 tion on August 17 was six. One very interesting thing about the fish that went 

 through the screen is that almost invariably upon finding that they were separated 

 from the main school they would dash back through the screen to join the school. 



FiQ. 13 



The result was that during the first day there were never more than 30 fish in the 

 protected area. 



At 11.30 a. m., August 18, the second day of operation of the screen, a short circuit 

 occurred in some very poorly insulated scrap wire it had been necessary to use in 

 making the power extension to the transformer supplying the screen. This took the 



