80 



REPORT OF COMMISSIONER OF FISH AND FISHERIES. 



acclimated and successfully reproducing their kind, the experiment is 

 not without interest. A portion of the 23,000 eg'gs perished and 10,000 

 were shipj^ed to the Green Lake Station, those remaining being applied 

 to hatching. The resulting fry, estimated at 5,000, were represented 

 by 2,000 survivors J une 30, 1893. Of the total of 2,010 surviving Atlan- 

 tic salmon on hand as fingerlings June 30, 1892, fi'om the hatching of 

 305,000 eggs in April of that year, 1,100 were from eggs of the accli- 

 mated j)arents, and of the 1,148 subsequently liberated in November, 

 690 were of this kind. At the date of the liberation referred to, as 

 many as 500 were remaining as a reserve, but these were reduced to 

 150 by the following June. 



LamUoclied salmon. — From fish reared 9,800 eggs were taken in 

 November, and from wild fish captured from Toddy Pond 4,200 were 

 secured. It is believed that the spawning fish in Toddy Pond were the 

 large ones liberated from the Craig Brook Station in the spring of 

 1892. Egg losses were rather large. 



Brook trout. — Fourteen thousaud eggs were taken from fish reared 

 in station ponds. The hatching is shown in tabular statement. 



Bainboiv trout. — The thirty adult fish held in i)onds were reared at 

 the station, having been hatched in 1889 from eggs received from the 

 Northville Station, Michigan. In the spring of this year they, for the 

 first time, evinced a tendency to spawn, eggs being taken March 15 

 and 16 to the number of 10,000. The eggs were inferior, and during 

 the year there were seventeen deaths among the brood stock. 



The statement below, based on close estimates, represents eggs of 

 various species employed in hatching, and shows the results up to a 

 period when all except the rainbow trout were taking food: 



Kind. 



Number 

 of eggs. 



liesults in fry. 



Hatched. May 31. June 30, 



Atlantic salmon 



Atlantic salmon acclimatized 



Landlocked salmon 



Brook trout 



Eainbow trout 



Total 



227, 300 



13, 400 



14, 000 

 13, 600 

 10, 100 



226, 800 



6,800 



11, 900 



13, 300 



2,000 



a 290, 000 



5,000 



11, 000 



10, 000 



1,900 



257, 500 

 2,000 

 7,000 

 9,000 

 1, 000 



278, 400 



260, 800 



317,900 



276, 500 



ciIncreaBe effected by presentation, about June 1, of 84,000 by the Maine authorities. 



In July the growing of fly larva^^ was resumed, these with chopped 

 meats comprising the food of the fish. Later in the summer experi- 

 mental trials were made in the capture of grasshoppers, to determine 

 their relative cost and food value, natural food having so far been found 

 most desirable. 



Losses sustained in the preceding year, from the causes mentioued, 

 among fishes to be subjected to rearing, were so great that the numbers 

 remaining on hand at commeiujement of the year, July 1, 1892, were 

 comparatively small, as follows: Atlantic salmon, 2,010; landlocked 

 salmon, 19,538 ; brook trout, 39,531 ; whitefish, 442 ; total, 61,521. From 

 these, distribution of 52,713 was made, as follows: 



