30 



cod season. And that a considerable difference in the year's num- 

 ber of cod-individuals tit for propagation exercises a perceptible 

 influence on the produce of the winter fisheries, must be considered 

 most probable. A reduction of the number of the cods of the 

 season that are tit for propagation, may of course in part be canned 

 by unfavourable physical conditions during the fry stages, (in ana- 

 logy with the unfavourable influence of severe frost on the young 

 grouse), but at present not very much can be said about this matter. 



- In the present work I ha\. tried, with a good will and at 

 the best of my ability, to draw reasonable conclusions from the 

 observations of others as well as my own. In certain points my 

 views differ from those of previous authors. It may he that I have 

 concluded more than the observations allow of, or that I have even 

 judged of facts in a wrong way. It is however my hope that the 

 material of observations I have brought forward will |irove useful 

 lor future investigations. 



