REVIEWS. 415 
is enforced a net might as well be stretched entirely across the 
river and the fishery declared extinct. In which we think he is 
about right, for what use will it be to restock the rivers unless 
we have laws prohibiting excessive fishing, either by allowing the 
fish an unobstructed passage up the river for one or two days each 
week, or by not allowing the use of anything smaller than five 
inch mesh, and limiting the depth of all set nets, as proposed by 
Mr. Atkins. 
During the year a large state hatching house was erected at 
Caledonia and placed under the charge of Messrs. Green and Col- 
lins, who very successfully carried out a number of experiments 
and hatched a large number of fish of various kinds. The a 
tempt was made to hatch the spawn of the pike perch (Lucio- 
perca) of Lake Ontario, but with little success, owing to the eggs 
being surrounded by a sticky substance and adhering so firmly 
together and to the sides of the pans as to prevent their being 
detached without destroying them. By constantly stirring the 
eggs for forty minutes after impregnation, Mr. Green succeeded 
in hatching a few. In a natural state he thinks the eggs are scat- 
tered as laid and adhere singly to the gravel, ete. 
The experiment was tried of impregnating the eggs of the sal- 
mon trout with the milt of the white fish, and the eggs were 
hatched, bringing forth hybrids that have characters of both par- 
ents, which, at the time of writing the report, were thriving 
well. These fish will probably grow to good size, and may prove 
avery acceptable table fish, but it is hardly probable that they 
will be capable of continuing the race, as they are generic and not 
specific hybrids. 
The Commissioners have hit upon the following expedient for . 
obtaining young black bass and several other (they write it hun- 
dreds) species of fresh water fishes. 
‘ Although no means of hatching black bass and hundreds of 
other species has yet been discovered, another method was found 
for sr cate meen the same end. very year large num- 
bers of various kinds of bass and other fresh water fish pass into 
six inches during the summer and the fall, yaen the canals 
have to be drawn off preparatory - the cold weat 
tofore, when the latter event occurred, the se fish were 
taken from the holes and anidar i in the bottom by the fisher- 
