MARINE BIOLOGICAL STATION AT PORT ERIN. 



35 



Plankton Investigation. 

 These observations have been carried on in much 

 the same way as in the previous four years, with the 

 kind help of various Assistants; and the new yacht 

 (S.T. " Buna," 95 tons, see fig. 12) has proved most 

 satisfactory, and very comfortable for work at sea. 



Fig. 12. Prof. Herdman's fishing-yacht " Runa," from a photograph taken by 



Dr. C. Macalister, at Shetland, on August 10th, 1911. 



During the Easter and the Summer vacations Mr. 

 Eiddell and Mr. H. G. Jackson helped me in the 

 observations on board the yacht, Mr. Chadwick did some 

 of the work of preserving the catches on shore and also 

 supervised the collections made from the bay during the 

 remainder of the year, and Mr. Andrew Scott is now 

 examining all the gatherings in detail with the 

 microscope. 



Altogether 119 samples were collected at sea from the 

 yacht in the Master vacation, and H\ in the Latter part 

 of August and in September [in the earlier part of the 



