418 ANNUAL RECORD OF SCIENCE AND INDUSTRY 



COST OF SALMON EGGS IN EUROPE. 



It may interest some of our readers who have heard of the 

 enormous prices paid in this country for impregnated salmon 

 eggs ($40 a thousand) to know the prices at which articles 

 of this kind are sold at the great national German fish estab- 

 lishment at Htiningen. From a price-list before us we notice 

 that the eggs of the salmon, and of several other species of 

 the trout family, with the embryo developed, can be supplied 

 at from a dollar to a dollar and ten cents per thousand. The 

 eggs of the grayling cost only thirty cents per thousand ; 

 those of the coregonus, the genus to which the whitefish of 

 our lakes belong, are sold at about six cents per thousand ; 

 and those of the pike at five cents. Young fish are offered 

 also at somewhat advanced prices ; thus, a thousand young 

 salmon will be furnished at from three to six dollars, in pro- 

 portion to the extent of their development. Circular Flsch- 

 erel-Verein, 1 8 7 1 , vi. , 2. 



ARTIFICIAL BREEDING OF SALMON. 



Frank Buckland, who is a high authority on the subject, 

 criticises certain proposed arrangements for salmon-breeding 

 on the Aberdeenshire Dee. Referring to the estimate of 

 2500 as the probable cost of the breeding establishment, he 

 insists that, if the object be to raise the salmon artificially aft- 

 er they are hatched, the expense will be thrown away; that 

 the much better plan is to introduce the young fish into the 

 streams after the volk-bao; has been dissolved, and it is con- 

 sidered safe to allow them to shift for themselves, and not to 

 attempt to carry them forward over a period of months or 

 longer, feeding: them with butcher's meat. 



He thinks that they should be taken, a few at a time, and 

 introduced to the small brooks, as high up on the tributaries 

 as possible, by means of small hand-nets, placing half a doz- 

 en or a dozen at a time in the stream, and taking care that 

 there are piles of stone and gravel to which they can betake 

 themselves as soon as possible. 2 A, June 15, 1872, 399. 



DO SALMON NEED TO RESIDE IN SALT WATER? 



A correspondent of The Field takes strong ground in favor 

 of the assumption that salmon will thrive and breed in fresh 



