446 ANNUAL RECORD OF SCIENCE AND INDUSTRY. 



persons assured him that they had had a different experi- 

 ence. 



WINTER QUARTERS OF NOVA SCOTIA SALMON. 



Dr. Gilpin, of Halifax, communicates a very interesting and 

 remarkable fact in regard to the natural history of the salmon 

 and sea-trout of the Atlantic coast of Newfoundland. He is 

 quite satisfied from his own observations that these fish, aft- 

 er running up the rivers in the spring to spawn, pass on up 

 to the lakes that form the head waters to spend the winter, 

 or else run up specially from the sea for the purpose. He 

 suggests that this may possibly be due to the limited extent 

 of the salmon streams on that coast, the fish spawning only 

 five, ten, fifteen, or thirty miles from the sea, their movements 

 being between the months of March and November, some go- 

 ing up and others coming down, in different broods or ages. 



GROWTH OF SALMON. 



According to observations at Hameln, on the Weser, the 

 young salmon, as generally supposed, usually return about 

 the expiration of their second year to the ocean, and remain 

 there, not one year only, but two, before going back to the 

 river from which they had previously descended. It has 

 been shown bv numerous observations at Hameln that be- 

 tween the birth of the salmon and its first return from the 

 ocean an interval of four years commonly elapses. Thus, 

 the newly-born salmon, which were put into the water in the 

 spring of 1868, in Silesia, ascended the Upper Oder in March, 

 1872. Of these several weighed from nine to twelve pounds, 

 but the majority from five to eight. Circular of Deutsche 

 Mscherei-Verein, x., 1872, 263. 



BEST KIND OF WATER FOR SALMON-HATCHING. 



A controversy has arisen between Dr. Hetting, Norwegian 

 inspector of fish at Christiania, and Von der Wengen, in ref- 

 erence to the most desirable water for hatching out the eggs 

 of salmon ; the former recommending that this be taken from 

 a point as near to the origin of the spring as possible, while 

 the latter insists that by so doing there will be a scarcity of 

 air in the water, which will have a pernicious effect upon the 

 health of the young fish. He thinks that it is of the utmost 

 importance that the water should previously traverse a con- 



