CONSEIL PERMANENT INTERNATIONAL POUR L’EXPLORATION DE LA MER

RAPPORTS ET PROCÈS-VERRAUX VOLUME III

------EDITION ANGLAISE [=■ ------v ...... ■■ — ...... J)

GENERAL REPORT

ON THE WORK

OF THE PERIOD 1902—JULY 1904

W ITH 10 APPEN DI XES

EN COMMISSION CHEZ ANDR. FRED. H ØST & FI LS COPENHAGUE

AOUT 1905 COPENHAGUE - IMPRIMERIE BUNCO LUNO CONTENTS

P a g e General Review ; with c h a r t...... i

APPENDIXES

Appendix A—C: Hydrographical Investigations p Appendix A. On the occurrence in the Atlantic Current of Variations periodical, and otherwise, and their Bearing on Meteorological and Biological Phenomena ; by O t t o P e t t e r s s o n . With 16 figures in the text. (With an introduction p. I— X, fig. 1 — 7 ) ...... 1— 26 B. The Hydrography of the Færoe-Shetland Channel in 1902 and 1903; by B. H ella nd -H a n sen . With 4 figures in the t e x t ...... 1 — 7 — C. On the Influence of the East Icelandic Polar Stream on the climatic changes of the Færoe Isles, the Shetlands and the North of Scotland ; by Mar tin K n u d se n . With 3 figures in the te x t...... 1— 8

Appendix D—K: Fisheries- and Biological Investigations

Introductory Review by P. P. C. H oek 1. Plankton investigations...... I— V 2. Biological and fisheries investigations...... VI—XX Appendix D. On the Production and the Conditions of Production in the Sea ; by K . B r a n d t ...... 1— 12 E. The Occurrence and Distribution of the Eggs, Larvae and various Age- Groups of the Food-Fishes in the North Sea; by Fr. H e in c k e . With 4 figures in the te x t...... 1—39 — F. On the periodic Occurrence of the principal Food-Fishes in the North Sea and Skager Rak; by H. H e n k in g . With 26 figures in the text and 2 ch arts...... 1 — 28 — G. Short Review of the Results of the international Investigations (mostly Norwegian and Danish) ; by J oha n H jo r t and C. G. J o h . P et er sen . With 10 plates and 7 figures in the te x t...... 1— 43 — H. Provisional Report on the Natural History of the Plaice based on the Work of Committee B in the Period ending June 30, 1904;by W alter G a r st a n g . With 3 charts, 10 figures in the text and 9 tables...... 1 — 53 Appendix H'. The Distribution of the Plaice on the Dutch Coast ; by H. C. R e d e k e . With 4 figures in the text...... 1 — 10 — J. Statistics of the North Sea Fisheries (Part I). The Fisheries of the various Countries; by P. P. C. H o ek and H. M. K y l e ...... 1—^126 — K. Statistics of the North Sea Fisheries (Part II). Summary of the available Fisheries Statistics and their Value for the Solution of the Problems of Overfishing; by H. M. K yle. .With 1 chart and 2 figures in the text.. 1— 58