XXVIII.-REPORT OF OPERATIONS AT THE NORTHVILLE AND 

 ALPENA (MICH.) STATIONS, FOR THE SEASON OF 1882-'83. 



By Frank N. Clakk. 



The season just closed was a favorable one for the work of this depart- 

 ment, and to this circumstance is due, in part, the fact that the volume 

 of results more than double those of any previous corresponding period. 

 The principal feature of the season's work was the propagation of white- 

 fish, aud this service was conducted on a very largely increased scale 

 of operations as contemi^lated at the outset. In order to provide in- 

 creased hatching and storage facilities, a new station was established 

 at Alpena, Mich., a hatchery being built and equipped expressly for 

 the treatment of eggs of whitefish. About 42,000,000 eggs were safely 

 laid in at this point, during the month of November, resulting in the 

 hatching of over 32,000,000 minnows the following spring, nearly all of 

 which were planted in the great lakes. 



At the Northville hatchery, about 30,000,000 whitefish eggs were re- 

 ceived, i)rincipally from Lake Erie fisheries; from these nearly 12,000,000 

 eggs were shipped, and 16,000,000 minnows hatched and deposited in 

 the great lakes. Other varieties of eggs were handled at Northville, 

 as follows : 277,000 lake trout from Lake Huron fisheries ; 473,000 brook 

 trout from the stock of breeders held at the Northville ponds ; 7,000 

 rainbow trout, also from the Nortliville x)onds; 1,400 German trout, 

 shipped to this station through favor of Mr. Fred. Mather ; and 20,000 

 landlocked salmon transferred from Grand Lake Stream, Maine. Some 

 1,500 German carp from the national carp-ponds at Washington were dis- 

 tributed in lots of twenty, to applicants from various Northwestern States. 

 Two new fish-ponds, one 10 by 60 feet, and the other 10 by 83, were 

 added to the plant of the Northville station ; and another pond, 30 by 

 100, designed for carp or bass propagation, was in process of construc- 

 tion at the close of the season. 



The general plan of oi)erations in the collection and manipulation of 

 the eggs and treatment of the minnows varies but little from the 

 methods of the preceding season, and need not, therefore, be dwelt 

 upon at length. A more detailed statemei;t of the results of the work, 

 together with a few random notes and suggestions, directly or indirectly 

 relating thereto, may, however, be worthy of record. 



Alpena, where the new hatchin g station for whitefish was recently 



[1"! 813 



