720 U. S. BUREAU OF FISHERIES 
ponds have been combined into one as a result of the flood. Brook-trout eggs 
to the number of 604,000 were handled, having been received in exchange for 
eggs of other species, and a good hatch resulted. The take of 455,900 rainbow 
eggs exceeds that of last year, and approximately 85 per cent were hatched. In 
addition to a stock of breeders carried over from previous years, 4,000 yearlings 
and 28,000 fingerlings are being held as a reserve stock. An unusual loss of 1,000 
rainbow yearlings occurred in one of the ponds within a period of a few hours. 
Apparently toxic conditions developed for some unknown reason. ‘The usual 
shipment of 25,000 wild eggs was received from the Montana field with the view 
of insuring a vigorous brood stock for future use. As the adults become too old 
for breeding they are released in near-by waters. 
Negligible results were secured from the propagation of largemouth and small- 
mouth bass and from the sunfish. These were the only pond species handled. 
Peres ponds were inspected with the object of initiating cooperative work in 
owa. 
NeosuHo (Mo.) Sration 
[GrorGE A. NEILL, J. P. SNYDER, AND W. H. THOMAS, in charge] 
The season’s fish-cultural activities have been supplemented by considerable 
work directed toward the improvement and repair of buildings and upkeep of 
grounds. The large number of people that visit the hatchery necessitates con- 
siderable attention to the appearance of the establishment. Leakage of some of 
the ponds required considerable repair work and the construction of concrete 
sides and bottoms. Rainbow trout again constituted the bulk of the output at 
this point. Considerable trouble from diseases was experienced, but these were 
checked before losses became excessive. The eggs produced by the station brood 
stock suffered excessive mortality during the period of incubation. The 20,000 
rainbow eggs received from the Bozeman station were hatched with small loss. 
Bere feeding experiments were carried on with the object of evaluating various 
iets. 
The collection of 1,037,700 rainbow eggs from the station brood stock failed to 
equal the record of the previous year. Most of them were shipped to other points 
but enough were left at the station to hatch 165,248 fry. A shipment of 25,000 
Loch Leven eggs was received from the Bozeman station. Success was experienced 
in hatching them, but difficulty attended the rearing of the fingerlings; 15,700 
were supplied to applicants. At the close of the year 57,000 rainbow trout were 
on hand. 
In the culture of the pond species the ponds were cultivated and fertilized. 
The production appeared to be about normal, however. Cold, unseasonable 
weather during the spring appears to have checked the spawning of the sunfish. 
Later spawning may offset this. The same condition prevailed to a considerable 
extent with the bass and crappie. There is indication that there has been a fair 
production of fry of the former, but no crappie have been seen. No fry of channel 
catfish had been observed up to the close of the year, and no distribution was 
made of the spring hatch. The drawing of the ponds in the fall of 1926 yielded 
over 40,000 of the above species. 
Bourbon (Mo.) substation.—This cooperative station, owned by the Von Hoff- 
man Press of St. Louis and operated by the bureau on a share basis, has experi- 
enced the most profitable year since its establishment. A collection of 2,042,690 
rainbow eggs was made, and they proved to be of excellent quality. Most of 
them were shipped as eyed eggs, although some were reared and distributed in 
Missouri waters. No difficulty was experienced with epidemics of disease at this 
Eleven: At the request of the owners of the plant 50,000 fingerlings were re- 
served. 
Langdon (Kans.) substation.—These leased ponds supplied a satisfactory output 
of bass, rock bass, crappie, and bream for filling applications in this territory. 
WHITE SuLpHUR Sprines (W. Va.) STATION 
{Epw. M. HAyYNEs, Superintendent] 
At this station emphasis has been laid on the development of a brood stock 
of rainbow trout and on the production of this species, although large numbers 
of both brook and Loch Leven trout are handled. Almost 5,000,000 trout eggs 
were handled during 1927, surpassing previous production; and considering the 
comparatively large size of the fingerlings distributed, the plant was at all times 
operating at nearly the limit of its capacity. 

