SEA-FISHERIES LABORATORY. 



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To those who were present at the collecting of these 

 samples, there seemed to be evidence of a connection 

 between the large swarms of Calanus and the presence of 

 mackerel which were being caught in the neighbourhood 

 at the time, and which were found by dissection to be 

 feeding on the Copepoda. In view of the importance of 

 such facts, we think it worth while to quote here some 

 notes written at the time, and since published elsewhere. 



Fig. 1. — Large Nansen Net and Plankton Hauls taken with it, in July, 

 near Tobermory. 



"S.Y. 'Kuna,' Tobermory, July 12th. 

 " On arriving in this bay last night we found that the 

 local boats had been catching abundance of mackerel close 



