1904 DEPARTMENT OF FISHERIES. 19 



Wilcox Lake, in the County of York; for two years from 1st August, 

 1903. 



Long Lake, near Rat Portage; for two years from 1st August, 1903. 



River Thames, between the City of London and J. D. Moore's dam, 

 Iredale's Dam, and the rapids opposite Dawson's farm; for two years from 

 1st August, 1903. 



Green (or McArthur's) Lake, in the Township of Caledon, in the County 

 of Peel; for two years from 1st June, 1904. 



Bear (reck, in the vicinity of Strathroy; for two years from the 1st 

 August, 1903. 



Buttons, Smith's, Brooks' and Edmunds' Pond, on the River Lynn, in 

 the County of Norfolk; for two years from the 1st August, 1903. 



The Credit River, from lot 5, Township of Caledon, to the Village of 

 Cheltenham, in the Township of Chinguacousy ; for two years from 1st 

 June, 1904. 



Bass Lake, in the Townsips of Oro and Orillia, in the County of Sim- 

 006 ; for two years from 8th July, 1904. 



Beaver River, at Cannington, in the Township of Brock, in the County 

 of Ontario; for two years from 26th July, 1904. 



Facts Regarding Fish and Fish Eggs, Not Generally Known, Useful 



and Interesting to Know. 



The first attempt to hatch fish anywhere is said to have been in France 

 in the 15th century. 



Little is known of the diseases that attack mature fish, the fungoid dis- 

 ease being perhaps the most common. 



Eggs of fish are fertilized after being deposited. 



Partially incubated eggs can be transported hundreds of miles without 

 injury if properly packed. 



The chief propelling power of a fish is not by means of its fins, their 

 chief function being for balancing and steering the fish, but by the sinuous 

 motions of its body. 



All fish do not possess the same number of fins, the number depending 

 upon the species. The names of the fins of a trout or whitefish are, the pec- 

 toral, near the head, the ventral on each side near the centre of the body, 

 the dorsal or back fin, the caudal or tail, the adipose, and the anal. 



The purpose of gills in fishes is to separate the air used by them in breath- 

 ing, the water being taken by way of the mouth, and expelled through the 

 gills. 



Some fish build nests and depoist their eggs therein; others deposit them 

 on stones, brush, and plants, the egsrs adhering thereto by a glutinous sub- 

 stance; and others again merely expel them as they swim through the water. 



The sunfish, bass, and catfish, are nest builders, and guard their nests and 

 their eggs for some time after they are hatched ; fish that do not build nests 

 desert their eggs as soon as deposited. 



About one per cent, of the eggs deposited in the natural way are hatched; 

 about ninety-five per cent, artificially hatched produce young fish. 



Bass cannot be profitably propagated artificially, but a few pairs in a 

 rearing pond will produce many thousands of fry in a season, and a small 

 number transplanted into waters into which they had not previously existed 

 will in the course of a very few years thoroughly establish themselves. 



The young of all game fish are cannibals ; fry of the bass and trout a few 

 weeks old will attack and devour their young and weaker companions. The 

 "brook trout has been known to devour its own eggs as soon las spawned, and 



