20 



RKPOKT OF COMMISSIONER OK FISH AND FISHERIES. 



METHODS OF FISH-CULTURE. 



Few iiiiproN ciiuMits ill tli(> incthodH of lish-culturo can bo recorded 

 for the year. TIk^ most notable one may be tli(> method of takin*^ 

 sahiion cg-gs at the l^aird, C'al., Station and substations, wliereby from 

 10 to 15 per cent more eggs are obtainable from the same number of 

 tish than her(>tofon\ This is accomplished by cutting the salmon 

 open after the usual sti'ipping and washing the blood}' eggs thus 

 obtained in a normal salt solution Ixd'ore fertilizing them, as explained 

 in detail under the summarized report of Baird Station. Thisimpi'oved 

 metliod will b(> adopted at the other salmon stations the coiuing year. 



At I*ut-in Bay, Ohio, Superintendent Downing has devised a new 

 hatching-jar along the same general lines as th(^ Stranahan jar, except 

 that it is of a difierent shape and of greater capacity. It has been 

 adopted for Put-in Bay Station. 



In pond cultur(\ 1)}' which Is meant the propagation of the basses 

 and other fishes, the eggs of which are handled and hatch(>d in ponds 

 by the natural i)rocess, little definite progress has been luade. Th(» J?'<'w- 

 eral feeling among fish-culturists in charge of pond stations Is that the 

 ponds for the propagation of bass and other fish should be made nuich 

 larger than at present — in fact, as large as possible and still have them 

 entirei}' under control so that the fish can be removed as wanted. 



The following stations and auxiliary stations were operated during 

 the year, and the work at each is reviewed in detail In the abstracts of 

 the reports from the various superintendents: 



Green Lake, Maine. 



Craig Brook, Maine. 



(irand Lake Stream, Maine. 



St. Johnsbnry, Vermont. 



Nashua, New Ilampsliire. 



Woods Hole, Massachusetts. 



G loucester, Massachusetts. 



Cape Vincent, New York. 



Swanton, Vermont. 



Steamer Fisli Ildirk (Delaware River) 



Battery Station, Maryland. 



Bryan Point, Maryland. 



Fish Lakes, AVashington, D. C. 



Central Station, Washington, D. C. 



Wytheville, Virginia. 



Edenton, North Carolina. 



l'>win, Tennessee. 



Cold Springs, Georgia. 



Put-in Bay, Ohio. 



Northville, Michigan. 



Detroit, Michigan. 



Alpena, Michigan. 



Sault Ste. Marie, Michigan. 



Dulutli, Minnesotii. 



Quincy, Illinois. 



Manchester, Iowa. 



Bellevue, Iowa. 



San Marcos, Texas. 



Neosho, Missouri. 



Leadville, Colorado. 



Spearlish, South Dakota. 



Bozeman, Montana. 



Baird, California. 



Battle Creek, California. 



Mill Creek, California. 



Rogue River, Oregon. 



Clackamas, Oregon. 



Little White Salmon River, Washington. 



Baker Lake, Washington. 



Green Lake Station, Maine (E. E. Race, Scperintendent). 



The work at the Green Lake Station has been confined entirely to 

 the propagation of the brook trout and landlocked salmon. During 

 the summer months, in addition to the usual fish-cultural work, inves- 

 tigations were made with the view to establishing new field stations for 

 the collection of eggs, and as a result operations were inaugurated at 

 Alligator Lake, in Hancock County, and Sourdnahunk Lake, in Plscata- 



