INTRODUCTORY 



In the Report for last year, the Annual Reports of the English Board of Agriculture 

 and Fisheries formed the basis of a general discussion of fishery statistics and their 

 utility in elucidation of the topographical distribution of Pletironectidae according to 

 weight per unit of area. 



It was intended to employ the data for igo8 and IQOQ for a consideration of the 

 seasonal distribution but unavoidable delay in their publication has made it necessary to 

 postpone this attempt till a subsequent year. Meanwhile, there have appeared during 

 1909 a number of important reports, chiefly of a biological nature, dealing with the 

 P/eîiroiiecii'dae, especially the Plaice. 



As previously, a distinction has been made in the case of the plaice, between the 

 research which is of a general nature and other work which forms a contribution to the 

 special economic problem of the plaice. The present Report deals only with the former. 



List of Reports 



1. Report on the Research Work of the Board of Agriculture and Fisheries in rela- 

 tion to the Plaice Fisheries of the North Sea, Volume III Special Statistics (Size 



and Weight) W. S. Masterman. 



2. North Sea Investigation Committee. Second Report (Southern Area) on Fishery 

 and Hydrographical Investigations in the North Sea and adjacent waters (1904 



— S) — i9°9- 



2. a. P.eport on the Vitality of trawl-caught plaice J. O. BoRLEY. 



2. b. Report on the Size and Age of Plaice at Maturity W. Wallace. 



2. c. Report on the Lowestoft Sailing Trawler Records 1903 — 6 R. M. Lee. 



2. d. Trawling Investigations 1904 — 5 (ss. Huxley) 



3. Report on the Proportionate Distribution of the Sexes of Plaice in the North Sea 

 (Vol: XI Rapports et Procès- Verbaux du Conseil International pour l'exploration 



de la mer) A. E. Hefford. 



4. Bericht über die dänischen Untersuchungen über den Schollenbestand in der öst- 

 lichen Nordsee, dem Skagerak und dem südlichem Kattegat A. C. Johansek. 



5. Zur Eiproduction der Scholle, {Pleuronectes platessa L.). . . Victor Franz. 



6. Ueber die Ernährungsweise einiger Nordseefische, besonders der Scholle Victor Franz. 



