73 
REPORT on the Investications carried on during 1910 
in connection with the LANCASHIRE S£A-FISHERIES 
LaporatTory at the University of Liverpool, and 
the Sra-FisH Hatcuerry at Piel, near Barrow. 
I)rawn up by Professor W. A. HERDMAN, F.R.S., Honorary 
Director of the Scientific Work; assisted by Mr. 
ANDREW Scort, A.L.S., Resident Fisheries Assistant 
at Piel; and Mr. James JouHnstTone, B.Sc., Fisheries 
Assistant at the Liverpool Laboratory. 
(With plates and text figures.) 
CONTENTS. PAGE 
1. Introduction (W. A. Herdman) : - - - - it 
2. Fish Hatching at Piel (A. Scott) - - - - - 80 
3. Classes, Visitors, &c., at Piel (A. Scott) - - : - 84 
4. Internal Parasites and Diseased Conditions of Fishes, 
with Plates I-V (J. Johnstone) - - - - 88 
5. Note on Sporozoan in the Whelk (Dr. W. J. Dakin) - 123 
. Report on Hydrographic Observations (Dr. H. Bassett) - 125 
7. Plankton of the West Coast of Scotland in relation to 
Trish Sea (W. A. Herdman and W. Riddell) ~— - - 132 
8. Report on Plaice Measurements (J. Johnstone) - - 186 
9. General Summary of Plaice-marking Experiments, 
1904-10 (J. Johnstone) ~— - : - - - - 225 
10. Intensive Study of Plankton around South end of Isle 
of Man—Part IV (W. A. Herdman and A. Scott) - 263 
INTRODUCTION. 
It is impossible to pass over the recent death of 
Mr. John Fell, the first Chairman of the Sea-Fisheries 
Committee, without a few words of regret and apprecia- 
tion on the part of the Scientific Staff. Huis services in 
organisation and administration are more fitly dealt 
with elsewhere, but a passing record of the part he 
played in connection with the scientific work of the 
Hy 
