REPORT OF THE COUNCIL. 651 



Mr. L. R. Crawshay has been continuing with marked success experi- 

 ments upon keeping alive and rearing in the Laboratory some of the 

 more dehcate plankton animals. This work is important as a general 

 study, which should lead to a better understanding of the right con- 

 ditions which should be adopted for the rearing of sea fishes, molluscs and 

 crustaceans. 



Mr. W. 0. R. King, of the University of Leeds, was appointed Ray 

 Lankester Investigator for 1914, and has been engaged in studies on the 

 physiology of Echinoderm development. The two subjects to which he 

 gave special attention were a determination of the temperature co- 

 efficient of development of Echinus and a study of the enzymes present in 

 the gonads of the same animal. Mr. King was assisted on the chemical 

 side of the investigations by Mrs. King. 



Mrs. Matthews has completed the study of the development of 

 Alcyonium, upon which she has been engaged for some time, and a 

 paper on the subject will shortly be published. 



Mr, E. T. Browne, who hired the steamer Oithona for some weeks last 

 winter, and thus enabled us to keep the vessel in commission during the 

 whole winter, spent some time at the Laboratory in connection with his 

 work on hydroids and medusse. Several interesting species were obtained, 

 some of which had not been recorded previously from British waters. 



Mrs. Sexton has given much assistance to the work which Dr. Allen is 

 carrying out on the Plymouth Polychsetes, by making a series of excel- 

 lent coloured drawings of many of the rarer species. On her own account 

 she has been carrying out experiments on Mendelian inheritance of eye 

 colour in the Amphipod, Gamtnarus chevreuxi. 



Mr. W. De Morgan is continuing to study the local Protozoa. 



Published Memoirs. 



The following papers, either wholly or in part the outcome of work 

 done at the Laboratory, have been published elsewhere than in the 

 Journal of the Association : — 



Crawshay, L. R. Report on the Distribution of the Microplankton. (Report 

 on the work carried out by the s.s. Scotia, 1913, pp. 68-126, plates 23-35.), 

 H.M. Stationery Office, London, 1914. 



Deistdy, A. Observations on the Gametogenesis of Grantia conipressa. 

 Quart. Joiu-n. Micr. Sei., vol. 60, 1914, pp. 313-76. 



Leigh-Sharpe, W. H. Calliobdella Lophii, Parasitology, vol. 7, 1914, 

 pp. 204-18. 



Lloyd, D. Jordan. The Influence of Osmotic Pressure upon the Regenera- 

 tion of Gunda ulvce. Proceed. Roy. Soc., vol. 88, 1914, pp. 1-20. 



