Report on the Investigations carried on in 1899 in 

 connection with the Lancashire Sea -Fisheries 

 Laboratory at University Collej^^e, Liverpool, and 

 the Sea-Fish Hatchery at Piel, near Barrow. 



Drawn up by Professor W. A. Heedman, F.E.S., Honorary 

 Director of the Scientific Work ; assisted by Mr, Andrew 

 Scott, Eesident Fisheries Assistant at Piel, and Mr. 

 James Johnstone, Fisheries Assistant at Liverpool. 



With Six Plates and a Map. 



CONTENTS. 



1. Introduction and General Account of the Work • - - 1 



2. Oyster Memoir and Oyster Bill 12 



3. Sea-Fisheries Conferences, and the need of a "Census" - 14 



4. Hatchery Work at Fiel — Fish and Lobsters ... 19 



5. Note on tlie American Shad ------ 29 



6. Notes on the White Fluke or Flounder - - - . 30 



7. The Structure of the Cockle, with an Appendix on Cockling 



in the Lancashire District ...... 34 



Introduction and General Account of the Work. 



(W. A. Herdman.) 



As in the case of last year's Report, I shall give first a 

 brief sketch of the work of the year, dealing with those 

 minor matters which require mention, and merely referring 

 here to those larger investigations which are treated fully 

 in the separate sections which follow. 



I mentioned last year that I had then set Mr. James 

 Johnstone, as part of his work in the Liverpool laboratory, 

 to make a detailed examination of the complete structure, 

 and as nmch as could be ascertained of the life-history of 

 the common cockle. This investigation has been Mr. 

 Johnstone's chief work during the year, and, as the result, 



