396 U. S. BUREAU OF FISHERIES 



eggs were apparently of good cjuality when received, but subsequent 

 losses so reduced the stock that onl}^ 1,450,000 fry were realized for 

 distribution. 



This station also distributed the product of 346,000 brook-trout eggs 

 purchased from commercial fish-culturists in Pennsylvania and Col- 

 orado and 41,000 lingerling steelhead salmon hatched from a consign- 

 ment of 50,000 eggs transferred to the Duluth hatchery by the 

 Oregon State Game Commission. 



In the course of the year an attractive cottage was constructed 

 for the use of the station foreman. Most of the finish work on the 

 second floor of this building was done at odd tunes by the station 

 employees. 



NORTHYILLE (mICH.) STATION AND SUBSTATIONS 



[W. W. Thayer, Superintendent 



The year's fish-cultural work at the Northville station consisted 

 in the propagation of small-mouth black bass and the hatching and 

 rearing of brook and rainbow trout fry and fingerlings from eggs fur- 

 nished the hatchery from outside sources. During the earlj winter 

 of 1924, 619,260 brook-trout eggs were acquired, 350,000 bemg pur- 

 chased from private fish-culturists in the East while the remainder 

 were donated to the bureau by the Pennsylvania Fish Commission, 

 being taken from the stock in the Pleasant Mount hatchery operated 

 by the State. Fry and fingerlings to the number of 548,580 were 

 produced from these eggs and distributed, the losses during the time 

 they were held amounting to slightly less than llj^^ per cent of the 

 original number. 



From a total of 211,695 rainbow-trout eggs, part of which were fur- 

 nished from the White Sulphur Springs (W. Va.) station and part 

 from the Paris hatchery operated by the Michigan Fish Commission, 

 one consignment of 28,000 was reshipped to an applicant, 102.855 

 fingerling fish were produced and distributed, and a considerable 

 number of fingerlings remained on hand at the end of the year. 



The unseasonably late spring hampered the work with the pond- 

 fishes and greatly curtailed the output. The brood stock of 199 

 small-mouth black bass was distributed in the breeding ponds on 

 May ('). The fish began nesting on the 12th, and by May 22 the 

 ponds contained 47 nests of bass fry. It is believed, however, that 

 all of these earlier hatched fish perished as a result of the prevailing 

 low water temperatures, which up to that date had not exceeded 58 

 and for a large portion of the time were considerably lower. Mild 

 weather set in near the end of May, and air and water temperatures 

 from that period to the close of the season were favorable. The fish 

 continued to spawn up to and including June 17, and from the 31 

 nests of eggs realized there was an output of 56,500 advanced fry. 

 The brood fish at this station are somewhat below the average size. 

 With the view of producing a greater output a special effort will be 

 made in advance of the next spawning season to secure brood fish of 

 larger size from Lake Huron. 



Charlevoix (Midi.) substation. — During the period from October 

 22 to November 26, 54,012,000 lake-trout eggs were obtained from 



CO mmercial fisheries in Lake Michigan, Lake Huron, and the Straits 



ggs wer 

 Huron, 



