370 ^- S. BUREAU OF FISHERIES 



The fry were allotted to the various substations and to the five cooperative 

 nurseries under the direction of this station or were distributed to applicants 

 in New York. During the spring a shipment of rainbow-trout eggs was re- 

 ceived from Michigan and incubated for subsequent distribution. A few Loch 

 Leven trout also were handled. 



Watertoicn {N. Y.) cooperative substation. — This, plant, consisting of a bat- 

 tery of troughs, grinding house, and cottage is sponsored by the Jefferson 

 County Fish and Game Association. In return for the use of the property and 

 certain monetary assistance for fish food, etc., the bureau allotted 100.000 

 trout fry to the association. At the close of the year the bureau was carrying 

 about 750,000 brook and rainbow trout for its own needs. 



Barneveld {N. Y.) cooperative substation. — This is a large hatchery project 

 leased by the Utica (N. Y.) chapter of the Izaak Walton League and operated 

 by the bureau. At the beginning of the year over 250,000 brook, rainbow, lake, 

 and Loch Leven trout fingerlings and yearlings were on hand. During the 

 early fall a severe epidemic broke out, and as it seemed to be beyond remedy 

 it was decided to dispose of all the stock on liand, either by distribution or by 

 destroying the infected individuals. The plant was then thoroughly disin- 

 fected, and about 300,000 brook and rainbow trout eggs and lake-trout fry were 

 shippe'l in during the winter. At the close of the year the fish were doing 

 well, and there was little indication of a recurrence of the mortality of the 

 previous year. 



The Cape Vincent station also administered four smaller nurseries situated 

 in Vermont and New York. These were uniformly successful. 



Stcanton (Vt.) substation. — In the fall of 1927 a 5-year agreement between 

 the State of Vermont, the State of Pennsylvania, and the Bureau of Fisheries 

 for the continued operation of the Swanton substation was entered into. As 

 usual, the bureau was in full charge of the work. The expenses were prorated 

 among the cooperative agencies, and the fry were allotted on an equitable basis, 

 40 per cent being returned to parental waters, 40 per cent being allotted the 

 State of Pennsylvania, 10 per cent to the bureau, and 10 per cent for general 

 applications held by the State of Vermont. A new 30-foot motor boat was con- 

 structed, and a number of live cars for holding fish until ripe were provided. 



Preparations for work were begun on March 15, and it was found necessary 

 to conduct extensive seining operations under the ice, as it appeared that the 

 fish were ripening in advance of the break-up. No trap nets were used until 

 April 20. and a large percentage of the fish had spawned by that time. 

 Collections were continued until May 6. when 3.275 pike had been penned. These 

 produced 137,060,000 eggs, and slightly less than 100,000.000 fry were hatched 

 and distributed according to the agreement. In conjunction with this work, eyed 

 yellow-perch eggs were collected and hatched. The majority of the fry were 

 planted in Lake Champlain, but a small percentage was distributed in other 

 waters in New England and New York. 



RESCUE OPERATIONS 



This division carries on rescue work on the upper INIississippi River 

 and is charged with responsibility for the bureau's activities in the 

 Upper Mississippi Wild Life Refuge. Propagation of carp and 

 buffalo fish in the lower Mississippi is also part of its duties. At 

 the headquarters at La Crosse, Wis., large numbers of trout are now 

 propagated. General supervision of all the fish-cultural work carried 

 on between the Rockies and the Appalachian Mountains is delegated 

 to this division. 



La Crosse (Wis.) Station and Substations 



(C. F. Culler, in charge) 



Several rowboats, a house boat, and a 32-foot cruiser were built during the 

 year for use in the Upper Mississippi River Wild Life Refuge. Buffalo fish were 

 not propagated in Louisiana during the year, but a crew carried on some ex- 

 perimental hatchery work with this species in cooperation with the State of 

 Arkansas. The territory covered was more extensive than last year, and the 



