MARINE BIOLOGICAL STATION ON PUFFIN ISLAND. 39 



fishes were, for the first time in our experience, attracted 

 by the light to the surface, and some of them were caught 

 and preserved. The fishes proved to be young of Ammo- 

 di/tes lancea and Gadus virens. 



One of the ship's boats was kept in the area illuminated by 

 the arc lamp, and by leaning over her side the small objects 

 in the surface-layer of water could be most distinctly seen, 

 and particular animals picked out and captured with a 

 hand-net as they darted about in the neighbourhood of 

 the light. Mr. Leicester and Mr. Hornell were indefatig- 

 able in this work and rendered good service. Dr. Hurst 

 and I arranged to be awakened by the sailor on watch at 

 three a.m., when we got up and took a surface tow-netting 

 about dawn, which was afterwards found by Mr. Thomp- 

 son to contain a much greater number of Copepoda, and 

 more variety than any of the other tow-nettings, either 

 day or electric-light, surface or bottom. Amongst other 

 interesting things it contained a large number of specimens 

 of Peltidium depressum which had not been taken at all dur- 

 ing the day, and only in very small numbers with the 

 electric-light bottom-net. This same species was taken 

 shortly before near Puffin Island by Mr. Thompson in the 

 tow-net which he left out all night attached to the Dinmor 

 buoy. This Copepod is usually found sticking on Lamlnaria 

 in the day-time, but evidently comes to the surface in 

 abundance late at night or early in the morning. It is 

 evident that this plan of taking surface gatherings at 2 or 

 3 a.m. will have to be further developed in our future 

 cruises. Probably the best way will be for the biologists 

 to keep watches like the sailors and have the tow -nets 

 going all night long. 



The following day was spent in steaming slowly about 

 off the southern coast of Anglesea, dredging and tow-netting 

 at frequent intervals. The surface life was found to be 



