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mothers or young fathers would seem to give eggs and milt 
which are more deficient in vital properties than such as are 
obtained from more mature parents. Different species of 
Salmonide may be crossed, but experience has yet to ascertain 
if the progeny will be sterile or fertile, local or anadromous 
in their habits. If sterile, and no longer migratory in their 
instincts, will they be in season all the year round? Could 
the fishculturist raise a non-migratory sterile form what an 
addition it would be to the lake fisheries, also to the upper 
waters of our rivers, with, of course, the drawback that the 
numbers would have to be occasionally replenished. 
So far as I am aware, the Fishery Department of the United 
Kingdom—a department which does not carry out experiments 
among our fresh-water fishes, nor investigations respecting 
those of the sea, gives no assistance and affords no aid. It is 
left to a single public-spirited individual to effect everything 
at his sole cost, and which he most efficiently does, regardless 
of trouble and expense. 
The United States, which possesses a competent fishery 
establishment, have demonstrated how marine fishes can be 
artificially hatched as readily as those of the fresh waters; and 
if our fisheries are to supply our growing populations with 
food, such will probably have to be effected not by legalising 
the massacre of the young of in-shore forms, unless to counter- 
balance such destruction artificial culture is brought into 
exercise, and man replenishes with one hand the waste which 
he is occasioning with the other. 
