REPORT OF COMMISSIONER OF FISH AND FISHERIES. XIX 
3. The station at Northville, Mich., for hatching the white-fish taken 
in Lake Huron, Detroit River, and Lake Erie. 
4, The Bucksport station, on the Penobscot River, for procuring and 
hatching the eggs of the Penobscot or Atlantic salmon. 
5. The station at Grand Lake Stream for the land-locked salmon. 
6. The station at Druid Hill Park for hatching eggs of the Salmonide 
and for the propagation of carp. 
7. The station on Monument Lot, in Washington, for carp. 
8. The station at the Arsenal, in Washington, also for carp. 
In addition to these, which may be called permanent stations, there 
was also a Station at the navy-yard, in Washington, for hatching out 
eggs of the shad obtained from the Potomac River. 
There was also a similar station for taking and hatching shad-eggs at 
Havre de Grace, on the Susquehanna River. 
Fuller details in regard to all these subjects will be found in subse- 
quent pages of the present report. 
3.—ASSISTANCE RENDERED TO THE COMMISSION. 
The act of Congress establishing the Commission directs the Execu- 
tive Departments of the government to render all necessary and prac- 
ticable aid in carrying out its mission; and, as in previous years, it is 
my very agreeable duty to report the cordial manner in which this has 
been done. 
Navy Department.—To the Navy Department, as before, the obliga- 
tions are very great. It was not necessary this season to call upon the 
Department for a steamer such as was furnished during previous sea- 
sons in the Blue Light and the Speedwell, the Fish Hawk being suffi- 
cient for all necessary purposes. The Department did, however, in 
accordance with the law of Congress, supply the officers and crew of 
the Fish Hawk, as also two navy launches, for use specially at Havre 
de Grace and on the Potomac River. A number of flags were also 
issued to the Commission, to be used for the fitting up of the Fishery 
Exhibition at Berlin. 
War Department.—To the Signal Office of the War Department the 
Commission is indebted for the supply of a large number of water 
thermometers to the light-houses and light-ships along the coast for 
the purpose of making observations upon the temperature of the water 
and its relationship to the movements of the fish. Copies of observa- 
tions made by the regular observers of the Signal Service were also 
furnished as heretofore. 
By order of General McDowell, a detail of soldiers was also supplied 
at the McCloud station for its protection against Indians and lawless 
whites. 
Treasury Department.—The supervising surgeon of the Treasury De- 
partment, at the request of the Commission, instructed Dr. Guiteras to 
visit Tiey West and carry on some investigations into the cause of the 
