SEA-FISHERIES LABORATORY. 91 



REPORT ON THE INVESTIGATIONS CARRIED 



ON DURING 1913 IN CONNECTION WITH THE 

 LANCASHIRE SEA-FISHERIES LABORATORY AT 



THE UNIVERSITY OF LIVERPOOL, AND THE 

 SEA-FISH HATCHERY AT PIEL, NEAR BARROW. 



EDITED BY 



Professor W. A. HERDMAN, F.R.S., 



Honorary Director of the Scientific Work. 



(With plates, charts and text figures.) 



Contents. page 



1. Introduction. By W. A. Herdman - 92 



2. Sea-Fish Hatching at Piel, By A. Scott 103 



3. Classes, Visitors, &c, at Piel. By A. Scott - - 106 



4. The Mackerel Fishery off Walney in 1913. By A. Scott - 109 



5. On the Pelagic Fish Eggs collected in 1913. By A. Scott - 116 



6. Diseases and Parasites of Fishes. By Jas. Johnstone - - 127 



7. Plankton of the Periodic Cruises. By Wm. Riddell - - 145 



8. Report on Plaice Measurements. By Jas. Johnstone - - 168 



9. Experiments with Marked Fishes. By Jas. Johnstone and 



T. Monaghan 240 



10. Report on the Hydrographic Observations. By H. Bassett - 280 



11. Plankton of the West Coast of Scotland— Part IV. By W. A. 



Herdman and W. Riddell - 300 



12. Report on the Examination of Shrimps. By T. Monaghan - 322 



13. Herring Investigations. By W. Riddell - 325 



14. Report on Sea-bottom deposits and fish food. By R. Ray - 340 



15. Intensive Study of Manx Plankton— Part VII. By W. A. 



Herdman, A. Scott and H. Mabel Lewis - - - 369 



16. Nutrition of Marine Animals — Rate of Oxidation. By 



B. Moore, E. S. Edie and E. Whitley .... 387 



17. Nutrition of Marine Animals — Lobsters in Captivity. By 



B. Moore and G. A. Herdman. ..... 411 



18. Further Notes on Decapod Larvae. By H. G. Jackson 420 



19. On the Drift of Sewage in the Estuary of the Dovey. By 



F. W. Durlacher 425 



20. On the Drift of Sewage in the Estuary of the Mawddach. 



By F. W. Durlacher 435 



21. Report on Mussel Beds and Sewage. By Jas. Johnstone - 443 



