MARINE BIOLOGICAL STATION AT PORT ERIN. 



79 



including two other shell-banks under slightly different 

 conditions, and showing apparently very different bottom- 

 deposits. These are (1) the Train bank, lying about 8 miles 

 N.W. of Port Erin, where there is a good deal of mud 

 mixed with the sand ; and (2) the Wart bank, lying 2 miles 

 S. of Spanish Head, near Port St. Mary, and having the 

 bottom formed chiefly of broken shells and other calcareous 



m9m'' 9H 



Fig. 12. — Showing the Agassiz-trawl being swung in 

 on the derrick. 



fragments. These three banks — the Ballaugh, the Train, 

 and the Wart — lying in the " Coralline " zone off the 

 Isle of Man, ought, in the end, to give us interesting 

 information in regard to the common characteristics and 

 the individual features of such fishing banks in our seas. 



G 



