Ill 



and ponds for the spawning, hatching, and rearing of 

 brook-trout (Salvelinus fontinalis) and California trout 

 (Salmo irideus). 



11. Alpena, Michigan. A station for the collection and 



development of the eggs of the white-fish (Coregonus clupd- 

 formis). 



12. Baird, California. 



a. Salmon station. A station on the McCloud River 



for the development and distribution of eggs of the 

 California salmon (Oncorhynchus chouicha). 



b. Trout ponds. A station near Baird, for collecting, 



developing, and distributing eggs of the California 

 trout (Salmo irideus). 



13. Clackamas River, Oregon. A station on Columbia River 

 for collecting and hatching eggs of the California salmon 

 (Oncorhynchus chouicha). 



"It is impossible from the data at hand to give detailed 

 statistics of the work done at all of the stations above mentioned ; 

 a statement of the operations of three or four of the larger ones 

 must therefore suffice. 



" The hatchery at Northville, Michigan, under the direction of 

 Mr. Frank N. Clark, passed into the hands of the United States 

 Fish Commission in 1880, and is now one of the most important 

 stations for salmonidse in the world. It is provided with natural 

 and artificial ponds in which brook-trout, rainbow-trout, land- 

 locked salmon and lake-trout, are kept for breeding purposes. In 

 addition to the eggs obtained from these ponds, many millions of 

 eggs of the white-fish, lake-trout, and wall-eyed pike are obtained 

 in the waters of Lake Erie, and forwarded to Northville to be 

 hatched and distributed. During the season of 1882-3, 7>95joo 

 eggs of the salmonidse, including white-fish, large smelt, in 

 appine, were handled at this hatchery, a large percentage of 

 which were hatched and distributed to different waters. A large 

 refrigerator is being put in in readiness for next season's work, 

 when it is expected that fully 500,000,000 eggs of the white-fish 

 alone will be hatched. 



