MARINE PISCICULTURE 303 



Cod 338,120,000 



Flounders (Pseudopleuronectes americanus) 1 94,000,000 

 Lobsters . . . . . . 81,000,000 



The fresh-water species were hatched at a 

 number of stations situated at convenient places 

 on the rivers and great lakes, and the marine 

 forms were dealt with at the two marine stations 

 at Wood's Hole, Boston, and Gloucester. 



Fish hatching was also taken up in Canada 

 and Newfoundland. The Dominion Government 

 undertook the hatching of lobster eggs. There 

 is an extensive fishery for this crustacean in 

 Canada, and the lobsters caught are, for the most 

 part, sent to the " canneries " to be canned for 

 export. But " berried " females that is, animals 

 carrying developing ova attached to the abdomen 

 are previously " stripped," that is, the eggs, which 

 would otherwise have been lost, are removed 

 from the parents and incubated in suitable ap- 

 paratus. The Dominion lobster hatcheries hatched, 

 in this way, 742,000,000 lobster fry in the 

 period 189197. In Newfoundland, cod hatch- 

 ing is principally practised, and the average annual 

 number of fry of that fish treated in the period 



1890-96 was i4S>435>555- 



Sea-fish hatching in Europe was first started 

 in Norway by Captain G. M. Dannevig, at 

 whose suggestion the Flodevigen hatchery for 

 salt-water fish, at Arendal, on the south-east coast, 

 was started, at a time when the decrease in the 



