REPORT OF COMMISSIONER OF FISH AND FISHERIES. XLVII 



these e^gs 274,000 were shipped to Oraig Brook and the remainder were 

 held for hatching at Grand Lake Stream. These produced 272,672 fry, 

 of which 130,797 were hekl until the close of the season, the balance 

 being liberated in Grand Lake and Grand Lake Stream. 



Of the eggs transferred to Craig Brook 160,000 were shipi)ed to other 

 points and the remainder were hatched. The fry resulting from them 

 numbered 89,873 at the close of the year. Of the 28 quinnat salmon 

 hatclied in 1897, only 10 were found in September, the missing ones 

 having probably been destroyed by minks: 188 were received in May 

 from St. Johnsbury and placed in a large deep pond for the purpose of 

 experimenting in the domestication of this fish. 



From the lot of 2-year-old steelheads resulting from eggs shipped in 

 1896 from Fort Gaston, Gal., 1,500 eggs were secured during April; 

 these were of inferior quality and only 1,637 Of the fry produced from 

 them survived to the end of the year. Of the 38,745 fry hatclied in 

 1898 from eggs received from California there were distributed during 

 the year 26,282. This lot of fish suffered from an obscure disease, the 

 leading symptom of which was an apparently cancerous destruction of 

 the tins, especially the caudal. A small lot were cared for in troughs to 

 afford data with reference to this disease; 287 of these remain on hand. 



The rainbow-trout fry resulting from eggs collected in Craig Brook 

 from wild fish released in Alamoosook Lake in August, 1897, though 

 suffering to a certain extent from the same disease which attacked the 

 steelheads, were successfully carried through the summer and 23,565, 

 or 72 per cent of those on hand at the beginning of the year, were 

 distributed during the fall. In March and April 11,450 eggs were col- 

 lected from fish in Alamoosook Lake. These yielded 7,290 fry, of which 

 4,829 remained on June 30. 



A small number of Scotch sea trout hatched from the original invoice 

 of eggs donated to the Commission by the journal Shooting and Fishing 

 in 1891 still survive. They have ocQupied a small, deep, turbid i)ond 

 since 1893 and have yielded eggs each year. Of their descendants sev- 

 eral hundred active, healthy fish remain. From the other fish on hand 

 186,300 eggs of poor quality were collected. Only 56,551 of the fry 

 resulting from them are on liand at the close of the year. 



The fish food during the year consisted principally of liver, hog's 

 plucks, horseflesh, aggregating 45,746i pounds and costing $513.22. 

 In view of the fact that for eight months the stock at the station varied 

 from 750,000 to 2,000,000 fry, yearlings and adults, this is not excessive. 



Two diseases, serious enough to demand notice during the year, dif- 

 fered in some respects from anything observed here before. The first 

 heavy mortality occurred in July, August, and September among the 

 Atlantic salmon in the ponds and troughs, compelling a great deal of 

 extra work and entailing heavy losses. The other attacked the steel- 

 heads and rainbows, but did not, so far as observed, extend to many lots 

 of these fish. It seemed to appear about the first of December, when 

 part of the distribution had been made. Some of the affected lots were 



