The lines ofi/t arrows r^elate onli^ 

 to Ihe^ Blackpool fishes. 

 3 °" Tfie thicks Unes indicate^ roiLgrhli/ 

 Ihe TTUtuvpaZhs lahero by the fishes 



Plate XJV 



IXPERIMENTS 



rcome Knoll. RED , 

 kpool closed ground BLACK . 

 lesW.from MorecambeB ay Lighhship. BLUE . 



iitozt oft/ie staZions 



.ir?iaZeli/ t/ie posilioTzs lu/tere t/te^fis7t 7i<xve 



