APPENDIX F 



ON THE PERIODIC OCCUREENCE OF THE PRINCIPAL FOOD- 

 FISHES IN THE NORTH SEA AND SKAGER RAK, 



BASED ON THE EETUENS OF GEEMAN FISHING - STEAMEES 



BY 



H. HENKING 



WITH 26 FIGURES IN THE TEXT AND 2 CHARTS 

 (Translated from the German by H, M. KYLE) 



