G8 U. S. BUEEAU OF FISHERIES. 



CRAIG BROOK (ME.) STATIOX AND SUBSTATIONS. 



[J. D. De Rocher, Superintendent.] 



That part of the fish-cultural work of the Craig Brook station 

 that was addressed to the propagation of Atlantic salmon is dis- 

 cussed in connection with the anadromous fishes of the Atlantic 

 rivers on page 55. 



During late December and early January a total of 1,303,700 ej^ed 

 brook-trout eggs was received from three commercial hatcheries lo- 

 cated in Pennsvlvania and New England. Of the first consignment, 

 received from a hatchery in Maine, 131,666 eggs were reshipped to 

 the Grand Lake Stream substation. The remainder of this lot — 

 658,334 — was incubated at the station, producing a hatch of 96 per 

 cent. Later losses were large, however, over 9 per cent of the young 

 fish having perished before the completion of the distribution in late 

 June. From 210,700 eggs of fine quality received from a Massa- 

 chusetts hatchery 202,651 fry were hatched. Of these. 155,800 were 

 distributed in the advanced fry and fingerling stages and 24.995 were 

 on hand at the close of the year. The eggs from the Pennsylvania 

 hatchery were too far advanced for shipment when forwaicled and 

 some of them hatched on the trays en route. While the percentage 

 of hatch on the remainder was nearly normal the subsequent losses 

 were excessive, the mortality up to the time of distribution amounting 

 to fully 50 per cent. 



Fifty thousand rainbow-trout eggs forwarded in December from 

 the Wytheville (Va.) station appeared, on arrival, to be in fair con- 

 dition. It developed later that they were of poor quality, nearly 

 half the lot being lost in process of incubation, while the fry hatched 

 were weak and all of them perished within a short time. 



During the month of March 380.602 eyed landlocked-salmon eggs 

 were received from the Grand Lake Stream substation, of which 

 number consignments aggregating 117,570 were reshipped to appli- 

 cants in Vermont. New Hampshire, Idaho, and Michigan. From 

 the remaining eggs 223,000 fry were hatched and distributed and 

 26,820 were on hand at the end of June. 



All of the buildings at this station were wired for electric lights 

 during the year. 



GREEN LAKE (JIE.) SVESTATION. 



Fish-cultural operations at this substation were concerned princi- 

 pally with the propagation of the landlocked salmon and the smelt, 

 the latter including the American smelt {Osmeriis mordav) and a 

 subspecies [O. mordax spectrum) locally known as the ''small 

 smelt." 



On November 1 traps were placed at the mouth of Great Brook 

 for the capture of brood landlocked salmon, and between the 9th 

 and the 22d of that month 193,000 eggs were taken. These were 

 of uniformly good cjuality and from them 178,480 fry were hatched 

 and distributed. 



The egg collections of smelt were the largest in several years. 

 The spawning season of 0. mordax began on March 25 and ended 

 April 15, while the spawning of the subspecies extended from the 

 5th to the 20th of May. In all, 46,300,000 eggs were taken, of which 



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