SEA-FISHERIES LABORATORY. 307 



localities, and these have been examined by the method 

 of titration by Professor Henry Bassett, who has kindly 

 supplied the list of determinations which we have added 

 in the three right-hand columns (pp. 305-306). 



In all, 49 hauls of the plankton nets* were taken 

 during the cruise. Of these, 13 were vertical hauls of the 

 Nansen net, the deepest being from 140 fathoms off the 

 Sound of Rona, and 36 were horizontal hauls, mostly at 

 the surface : 22 of our surface hauls were taken with the 

 larger Nansen net, measuring 1 metre in diameter of 

 mouth. 



The complete list of the plankton hauls is given on 

 pp. 308-309, arranged chronologically and with the same 

 indications of amount and nature that were given in the 

 corresponding table in our last report. 



It is obvious, on a comparison, that these series of 

 gatherings viewed as a whole are very much more zoo- 

 planktonic than those of any previous year during the 

 period of our observations. 



Comparison of Gatherings. 



We may now examine and compare some of the more 

 noteworthy hauls : — 



We have two vertical hauls from precisely the same 

 deep hole (108 fathoms) off Ardmore, at the north end of 

 the Sound of Mull, the one taken nearly a month later 

 than the other, which show the same fauna, but consider- 

 ably reduced in amount at the later date : — 



* The results of the dredging and trawling are not discussed in this paper. 

 Some account of the more noteworthy animals obtained from the bottom 

 will be found in " Spolia Runiana," II — in Journ. Linnean Soc, Zool, 1914. 



