SEA-FISHERIES LABORATORY. 81 



Report on the Investigations carried on during 1902 

 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.R.S., Honorary 

 Director of the Scientific Work ; assisted by Mr. 

 Andrew Scott, A.L.S., Resident Fisheries Assistant 

 at Piel; and Mr. James Johnstone, B.Sc, Fisheries 

 Assistant at the Liverpool Laboratory. 



(With tables, charts and figures in the text.) 



Contents. 



1. Introduction and General Account of the Work. (W. A. H.) 87 



2. Sea-Fish Hatching at Piel. (A, S.) - - - - - 97 



3. The Artificial Fertilization of Fish Ova. (A. S:) - - 103 



4. Lobster Spawning. (A. S.) - 106 



5. Spring and Autumn Herring. (J. T. Jenkins) - - - 114 



6. Future of Sea-Fisheries Investigation. (W. A. H.) - -125 



7. Scheme for Investigation of Irish Sea. (W. A. H.) - - 141 



8. Experiments with "Drift Bottles." (J.J.) - - - 154 



9. Report on Trawling Statistics. (J. J.) - - - - 165 



10. Identification of Fish Eggs. (J .J.) 181 



11. Technical Instruction at Piel. (W. A. H.) 187 



Introduction and General Account of the Work. 



The work of the past year has been chiefly : — 



(1) The hatching operations and other similar work 

 carried out at Piel by Mr. Andrew Scott ; 



(2) Laboratory investigations by Mr. Johnstone at 

 Liverpool ; 



(3) Analysis and discussion of our fishery statistics ; 



(4) The work of the circulating Fisheries Exhibition ; 



(5) Practical Laboratory Classes for Fishermen ; and 



(6) I may add my own work in connection with the 

 Keport of the Ichthyological Eesearch Committee, which 

 has a considerable bearing upon our local investigations. 



Some of these matters which can be treated shortly I 



K 



