100 REPORT OF THE COUNCIL. 



containing a single species, and that pelagic larvse can often be reared 

 through their metamorphosis by keeping them in sterile sea-water and 

 feeding them on such diatom cultures. 



Mr. G. H. Drew has been working at the Laboratory during the 

 year on the diseases of fishes, and has also been studying the question 

 of abnormal growths in other marine animals. Mr. Drew has recently 

 been elected a Beit Memorial Fellow for medical research, and is thus 

 able to devote his whole time to a continuation of these studies. 



The work of collecting and identifying the larvre and young stages of 

 fishes has been continued by Mr. A. E. Hefford during the year, 

 and the results now tabulated for publication include collections from 

 1906 to 1909. The study of embryonic and early larval stages has 

 been made upon tow-netted pelagic eggs kept under observation in the 

 Laboratory. The MS. and coloured drawings for a report on this part 

 of the work for 1909 are ready for publication, to which is added an 

 appendix describing the larval stages of Solca lascaris, completely 

 observed for the first time this spring. Many larval and post-larval 

 forms have been added to the Museum collection. 



A sliort report on experiments upon the influence of low tempera- 

 tures on the turbot has been sent to the New Zealand Government, 

 who asked for the information with a view to acclimatizing the turbot 

 in New Zealand. 



Specimens of marine animals and plants have, as usual, been sup- 

 plied to many museums and colleges in all parts of the world for 

 teaching purposes, as well as to many individual workers for the pur- 

 poses of research. Parties of boys and girls from a number of Plymouth 

 schools have been adgiitted from time to time to the Aquarium free of 

 charge. 



The International Fishery Investigations. 



The following is a summary of the work done, and of the conclusions 

 arrived at by the scientific staff working under the direction of the 

 Council. 



Section I.— NORTH SEA WORK. 

 A. WORK AT SEA. 



From June 1st, 1909, to the end of October, when she was finally 

 laid up, the Huxley made four voyages, in the course of which 42 hauls 

 of the commercial trawl were made, while smaller gear was used at 67 

 stations. The total number of voyages made by the Huxley during the 

 participation of the Association in the International Investigations is 



