34 



callarias), the green rod [Qadiis viretis), and ou tlie whole, more or less, tlie 

 other codfishes, maclceréls, sJiarJcs, etc. 



We see also that many stationary fishes, which are attached to the 

 bottom, as young fish belong to one loeality, as growu-up fish to another; this 

 applies, for instance, to the plaice and other flatfishes.*) 



1. The Closed Waters (Fjords etc.). 



By looking at a map of the northern part of the Cattegat**) — within 

 the limits here laid down — it will be seen that the coasts have scarcely auy 

 natural inlets. 



The couditions of the fjords are tlierefore rarely fouud liere, and a closer 

 investigation shows that they are more developed at piaces where man has 

 assisted uatm'e and, for instance by the buildiug of harbours, just aimed at 

 producing conditions similar to those which, in the fjords, we find made by 

 nature: calm waters, made calm by shutting out the sea to some exteut. 



We find thus an artificial fjord-locality at Frederikshavn, in the inmost 

 basin, which is shut out from the inner harbour, properly so cailed, by means 

 of a provisioual dam with one single narrow opening; in here the water is 

 quite calm with dense zostera-vegetation on mud deposits. 



Similar conditions, though less highly developed, we find also in the in- 

 most eorners of the harbour at Hirtsholmene. 



Produced without the aid of man, we find them also on quite shallow 

 water, between some of the banks of Læsø, south of this island. 



The fish-fauna in the basin at Frederikshavn cousists of the following 

 forms : 

 The black Goby {Gobhts niger), large, mature specimens as well as smaller 



*) The above trawlings ave arranged topograpliically, so that those which have been 

 made in the same part of tlie sea, are ]5ut together. The text, on the other hånd, has 

 been arranged according to the Iselts (locahties), but by each of these it has been stated, 

 which trawhngs (journal-numbers) fall within the helt in question. 



For some of the localities, viz. the fjords and the sand-banks, the results of the several 

 investigations have not been stated among the trawlings, in some raeasure because they 

 have been produced in another waj', by ammodytes-seines, stake-nets, ahrimp-nets, etc. 



Something like this is the case also with the zosterabelt, ouly very few of the 

 numerous hauls at this loeality being stated in the annexod trawlings. 



**) See >Haucli.s< Togter. 



