350 RKPORT OF THE COUNCIL. 



the North Sea, from America, and from other localities, and a report 

 on the subject is iu preparation. At the same time systematic investi- 

 gations are in progress with reference to the general question of the 

 movements of the migratory fishes, more especially of the mackerel, 

 in connection with the periodic movements of the floating organisms 

 upon which these fishes, directly or indirectly, depend for their food 

 supply, and also with the changes in the physical conditions of the 

 sea, especially with regard to density and temperature. 



Mr. Holt has paid much attention to questions connected with the 

 reproduction and development of the fishes living in the neighbourhood 

 of Plymouth, and their distribution at different ages. A memoir dealing 

 with these questions has been published in the Journal of the 

 Association, and Mr. Holt has also given evidence on the subject at 

 an enquiry, held by the Board of Trade, having reference to a bye-law 

 proposed by the Devon Sea Fisheries Committee. 



The experiments with floating bottles for determining the surface- 

 drift in the English Channel have been continued, and a report upon the 

 results of the first year's work in this direction has been published. 



The systematic dredging and trawling of the grounds between the 

 Eddystone and Start Point have been proceeded with, and the results 

 are now being prepared for publication. 



A collection of specimens of fishes, and other marine animals which 

 serve as food for fishes or are used as bait, was arranged and exhibited 

 by the Association at the Yachting and Fisheries Exhibition, held 

 during the summer of 1897 at the Imperial Institute. This collection 

 has since been on view at the Laboratory at Plymouth. 



Occupation of Tables. 



The following naturalists have been engaged in research work at the 

 Plymouth Laboratory during the year : — 



AV. I. Beaumont, B.A., Cambridge (Nudibranchiata). 



F. P. Bedford, B.A., Cambridge (Myriothela). 



G. Brebner, University College, Bristol (Algoe). 



E. T. Browne, B.A., University College, London (IMedusie). 

 L. W. Byrne, B.A., Cambridge (Teleosteans). 



A. H. Church, BA., Oxford (Algoe). 



J. T. Cunningham, M.A., Penzance (Crabs). 



G. Duncker, Ph.D., Kiel (Variation of Fishes). 



F. W. Gamble, M.Sc, Owens College, Manchester (Nervous System of Polychsetes). 

 E. S. Goodrich, BA., Oxford (Polycha3tes). 



N. B. Harman, M.B., Cambridge (Eyes of Fishes). 

 T. V. Hodgson, Plymouth (Crustacea). 

 J. W. Jenkinson, B.A., Oxford (Larvoe of Crustacea). 

 VV. F. Lanchester, B.A., Camlnidge (I'horonis}. 



