348 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



house W. by N., Hester Island N.W., outer edge of 

 Muldoanich N.E. by N.^N " ; and 113 fathoms on 

 August 2nd, N.W. of Bhaic Island, in the Firth of 

 Lorn. 



As our main object in this paper is to> discuss the 

 nature of the plankton, we shall now consider the various 

 tow-net hauls in some detail. The list is as follows: — 



"Runa," 1912— Plankton Hauls. 



The following are used in the right-hand columns 



Z = Zoo-plankton, P = Phyto-plankton. 



N = Neritic, = Oceanic. 



Z + p = A small amount of phyto-plankton with the zoo-pl. 



+ n = A few Neritic forms with an Oceanic gathering. 



Date. LocalhVy. 



Aug. 2 N.W. of Bhaic Island .... 

 5 Off Ardmore, N. of Mull 



Depth. Quantity. Nature. 

 113 faths. Small Z + p, O + n 

 109 faths. Medium Z, 



15 



Castle Bay, Barra Surface Sm. 



*5 miles E. of Muldoanich ... 107 faths. Med. -1 



*5 miles E. of Muldoanich ... Surface Sm. 



*Off Barra Head, Bernera ... Surface Sm. 



*Off Barra Head, Bernera ... 145 faths. Med. 



*Ofi Eriskay 102 faths. Med. 



*4 miles E. of Loch Eport ... 94 faths. Med. 



*Upper Loch Seaforth Surface Med. 



*Mouth of Loch Seaforth 42 faths. Med. 



* Mouth of Loch Seaforth Surface Med. 



*East Shiant Bank Surface Sm. 



*Off Ewe Island Surface Large 



Outer Loch Torridon 50 faths. Sm. 



Outer Loch Torridon Surface Sm. 



*Loch Shieldag 35 faths. Sm. 



*Loch Shieldag, nearer Kyle.. 70 faths. Med. 



Upper Loch Torridon Surface Med. 



Z + p, 

 Z + P, 

 Z + P, 



Z + p, 



Former 

 years. 



P.N 



(Z.1911) 



P.N 



(Z.1911) 



Same 





 O 

 



N 

 N 

 N 

 O 

 -p, o- 



Z+p, 



Same 



Z + p, 



Same 



Z + p, 



— 



Z + p, 



— 



P + z, O + N 



Same 





