126 



Report on the Investigations carried on during 1900 in 

 connection with the Lancashire Sea - Fisheries 

 Laboratory at University College, Liverpool, and 

 the Sea-Fish Hatchery at Piel, near Barrow. 



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

 Director of the Scientific Work ; assisted by Mr. Andrew 

 Scott, Resident Fisheries Assistant at Piel, and Mr. 

 James Johnstone, B.Sc, Fisheries Assistant at Liverpool. 



With Nine Plates, and other Illustrations. 



Contexts. 



1. Introduction and General Account of the Work - - 126 



•2. Eequired Survey of Fishing Grounds - 141 



3. Fish Hatching at Piel ------ ... 156 



4. Note on the Spawning of the Mussel - - - - 161 



5. Statistics of the Mersey Shrimping Grounds - - - 164 



6. Report on Deposits and Shrimps ----- 181 



7. Note on a Sporozoon Parasite of the Plaice - - 184 



8. On the Fish Parasites Lepcoplitlieints and Lerna>a- - 188 



Introduction and General Account of the Work. 



In the main the work of the past year has heen 

 similar in its nature to that of the previous one, and has 

 consisted in : — 



(1) The hatching operations and other work carried out 

 at Piel by Mr. Andrew Scott ; 



(2) Laboratory investigations by Mr. Johnstone at 

 Liverpool ; 



(3) Certain observations at sea taken from the steamer, 

 at Piel, at the Isle-of-Man, and at various other points in 

 the district, by Mr. Dawson, Mr. Ascroft, and others — all 

 discussed and reduced to order at the Liverpool 

 Laboratory : 



(4) The work of the circulating Fisheries Exhibit ; 



(5) Practical laboratory classes at University College, 

 Liverpool, for fishermen ; and 



