586 U. S. BUREAU OF FISHERIES 
this unit to incubate trout eggs. More than 1 million brook, brown, 
and rainbow eggs were hatched. In addition to the furnishing of 
fish for rearmg at the Ogletown substation, several thousand trout 
were allotted to conservation clubs to stock their nursery ponds. 
Nine ponds, ranging in size from }4 to 2 acres in area, for the propaga- 
tion of warm-water fishes, were completed in time to be stocked with 
brood fish during the spring. C.C. C. enrollees assisted in the above 
construction work as well as in the landscaping of grounds and the 
building of roads. 
The Northville (Mich.) station’s combined output of trout and 
pondfishes was in excess of one million. Approximately 660,000 trout 
were delivered to 5 cooperative feeding stations, 2 of which are within 
the boundaries of National Forests. Several thousand trout were 
consigned to the conservation departments of Indiana and Ohio for 
the stocking of suitable waters in their respective States. New outlet 
kettles were constructed in the 9 warm-water fishponds, and the ponds 
were graded. The hatchery water supply was materially increased 
by the construction of a concrete retaining wall across the south- 
west side of the spring pond. After repairs and alterations were made 
to all station buildings, they were painted. 
The Powder Mill Park (N. Y.) hatchery, which is operated in 
cooperation with the Monroe County Park officials, reared several 
thousand trout to legal size before releasing them. This station also 
handled smallmouth and largemouth black bass for the stocking of 
Monroe County waters. 
The 65,000 trout liberated by the Carpenter’s Brook (N.Y.) station, 
which is operated in cooperation with Onondaga County sportsmen, 
were all 5 to 7 inches in length. At the close of the year this unit 
was feeding more than 200,000 fingerling and yearling brook, rainbow, 
brown, and lake trout. No output of smallmouth black bass was 
recorded, as the ponds to be utilized for this species were not completed 
until during the fall months. Brood stock of this species was collected 
and placed in the ponds this spring. 
The Manchester (Iowa) station collected 2,992,000 rainbow trout 
eges of which 89 percent were eyed. All of these eggs, with the excep- 
tion of approximately 200,000, were shipped to other Bureau and 
State hatcheries. The production of smallmouth black bass was 
negligible, which was ascribed to the stocking of the rearing ponds 
with forage minnows previous to the introduction of bass fry. A new 
dwelling was constructed and residence No. 3 was moved to a new 
location and provided with a basement. Two 25-foot circular con- 
crete ponds were built and a new main-supply pipe line was laid from 
the spring to the hatchery. 
In an effort to step up the production of warm-water fish at the 
Flintville (Tenn.) station, 5 new ponds were excavated. Four of 
these are approximately 1 acre in area, the other bemg 2 acres. This 
brings the number of ponds up to 16, with a total area of 17% acres. 
The reservoir from which these ponds receive their water supply was 
enlarged. From 250,000 eyed rainbow eggs received by transfer, 
sufficient fish were produced to meet the requirements for this species 
in that territory. 
The most outstanding feature of the fish-cultural work at the Erwin 
(Tenn.) unit was the production of more than 1,000,000 pondfish. 
The output of trout was on a level with that of last year. A new 
residence was constructed and the pond system enlarged. 
