MARINE BIOLOGICAL STATION AT PORT ERIN. 



73 



" With a view to determining the relation of plankton and 

 fishes, simultaneous examination should be made of the 

 stomach contents of pelagic fish and the plankton in the 

 surrounding waters." 



In pursuance of this policy we have started at Port Erin 

 the investigation of the plankton and fish occurring in associa- 

 tion with the summer Port St. Mary herring fishery, which is 

 being carried out by Mr. Bygrave (see above, p. 37) ; and it was 

 with the same object in view that we examined into the relations 

 of the mackerel and Calanus around Tobermory during the 

 cruise of the " Runa " (see p. 52). 



Fig 21. — Over 50 Dog-fishes caught in an hour with hook and Line Erom 

 the " Runa," in Loch Sunart. 



