REPORT OF COMMISSIONER OF FISH AND FISHERIES. LXXXI 



The following table shows the number of fish on hand at the close of 

 the year : 



Alpena Station, Michigan (Frank N. Clark, Superintendent). 



In addition to a number of minor repairs made during the summer, 

 a new floor was laid in the hatchery, the batteries were rebuilt, and 

 new tanks were purchased and installed. This work was directed by 

 Mr. W. W. Thayer, in the absence of Mr. S. W. Downing, the foreman. 

 No special efforts were made to collect whitefish eggs, owing to the 

 passage of a law prohibiting fishing from November 1 to December 15, 

 but 480,000 were obtained from fishermen in the vicinity; 10,000,000 

 were also transferred from Put-in Bay during the month of December. 

 The fry commenced hatching on April 7 and finished April 16. The 

 entire lot was planted in Lake Huron with the exception of 500,000 

 deposited in Clear Lake. 



Attention is called to the following instance, as indicating to what 

 extent whitefish eggs may increase in bulk after having been placed in 

 the hatchiug-jars. On November 15 a spawn- taker secured 56 ounces 

 of eggs from one whitefish, as measured 10 hours afterward. They 

 were placed in ajar by themselves and left undisturbed until March 7 

 except to clean off the dead ones, when they were again measured and 

 found to contain 61 ounces. 



In addition to the whitefish hatched at the station 1,500,000 lake- 

 trout eggs were transferred from Northville. These were hatched in 

 February and the fry resulting from them were planted in March at 

 various points on Lakes Huron and Michigan. 



Mr. Downing returned to the station on October 26 and remained in 

 charge until the close of the year, when the hatchery was dismantled 

 and the hatching apparatus cleaned, painted, and put away for the 

 season. 



Duluth Station, Minnesota (S. P. Wires, Superintendent). 



During the summer 240 fry troughs, 7 feet 5 inches long, 11 inches 

 wide, by 7f inches deep, were constructed for the lake- trout work; the 

 grounds in front of the hatchery were plowed, partially graded, and 

 the old carp ponds filled in; repairs were made to the supply tank and 

 hatching-room, and the flume leading from Leslie Eiver, which had been 

 damaged by freshet during the past summer, was rebuilt. 

 f. r. 98 vi 



