256 SCIENCE PROGRESS. 



to the second year. Constant fishing had greatly thinned 

 the small variety of cod frequenting the Norwegian fjords, 

 and there should be less difficulty, therefore, in deter- 

 mining the result of these experiments. For a year or 

 two it is stated that the increase of cod on the inshore 

 grounds has been marked, and further reports on the con- 

 dition of these waters will be anxiously watched. Besides 

 hatching the cod on a large scale, Dannevig has experi- 

 mented successfully with the eggs of the flounder and the 

 lobster. The apparatus used by Dannevig is that mainly 

 employed at Dunbar, and will subsequently be described. 

 In addition to the extensive hatching-house, a large salt- 

 water basin for rearing the young, and a pond for the 

 spawning fishes, are attached to the Norwegian station. 



Though this country is thus not the first to make ex- 

 periments in hatching marine fishes on a large scale, it is 

 ten years at least since both this and other means of increas- 

 ing the more valuable food-fishes were brought forward. 

 Last year one of the methods was carried out by bringing 

 several hundred soles from the east coast of England and 

 placing them in St. Andrews Bay, where only a very few 

 occur. This year the Fishery Board for Scotland was also 

 able to commence the artificial hatching of sea fishes at 

 Dunbar, where for some time they have been making pre- 

 parations by constructing a hatching-house, spawning-pond, 

 filtering-boxes, and by enclosing a tidal-creek for retaining 

 the spawning fishes. As a careful account of the arrange- 

 ments, which were founded on those of Captain Dannevig 

 at Arendal, is given in the Report of the Fishery Board by 

 Dr. Fulton, 1 with whom rested the responsibility of carry- 

 ing out the whole system, only such structural features as 

 are necessary to explain the method will be alluded to. 



In selecting the species to be experimented with at 

 Dunbar, it was thought desirable to begin with forms not 

 only valuable in the market, but comparatively scarce in the 

 neighbouring waters, and accordingly the turbot and sole 

 were chosen. The former is, perhaps, the most valuable 



1 Tweljth Annual Report (1894), p. 196. Also Captain Dannevig's 

 Beskrivelse of Flodevigens Udkla'kningsauftalt ved Arendal, 1892. 



