186 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



All the plaice caught by the S.S. " James Fletcher " 

 in the course of the usual trawling experiments have 

 been measured. Here again the data with respect to the 

 two fisheries mentioned above are of value. An 

 interesting series of measurements of plaice caught in a 

 shrimp-trawl net have also been made by the officer in 

 charge of the New Brighton Fishery Station. All these 

 figures are tabulated in the report which is being 

 prepared. They will be useful for future discussions, but 

 no useful purpose would be served in considering them 

 now. 



III. FlSH-MARKING EXPERIMENTS. 



Owing to the pressure of other work, only one of 

 the proposed experiments was made. About 400 plaice 

 were marked and liberated at Nelson Buoy, off the mouth 

 of the Ribble Estuary. The recaptures are tabulated in 

 the report, but, so far, it would be premature to discuss 

 the results. 



In addition to the work carried out under the above- 

 described scheme, we have also several other investiga- 

 tions to record. 



A number of interesting pathological specimens have 

 been received during the year, chiefly from the Port 

 Sanitary Inspector at Fleetwood. These have been 

 examined by Mr. Johnstone, who reports upon several 

 diseased conditions of fish. Dr. Moore Alexander 

 continues his bacteriological investigations by reporting 

 on a case of true piscine tuberculosis. 



I have set Mr. H. G. Jackson, who is carrying on 

 Fisheries research work in the Zoological Department of 

 the University, to examine all the higher Crustacean 

 larvae obtained in our various plankton gatherings, and 



