16 REPOET OF THE COMMISSIONER OF FISHERIES. 



At Neosho, Mo., a 10-inch iron supply pipe has been laid in place of 

 an old wooden conduit, and supply and distributing reservoirs, new 

 troughs, machinery, and appliances were installed in the hatchery. 

 Further improvements to the water supply are held in abeyance pend- 

 ing the acquirement of a right of way. 



At Put-in-Bay, Ohio, the capacity of the hatchery has ])een increased 

 by the purchase and installation of 760 additional hatching-jars, and 

 iron supply tanks of a total capacity of 17,500 gallons have been sub- 

 stituted for the old wooden one. There have also been extensive 

 repairs to the buildings and machinery. 



At Duluth, Minn,, the hatchery has been wired for electricity, 460 

 feet of the suppl}^ flume have been reconstructed, the crib well has 

 been deepened, and material has been purchased for a new pipe line 

 and reservoirs. 



At Spearfish, S. Dak., sudden floods pouring down the canyon, at 

 the mouth of which the station is situated, have caused much damage, 

 and have necessitated the expenditure of considerable sums of money. 

 The measures originally taken to prevent such damage having proved 

 insufficient, an old protective channel has been excavated to a depth 

 of 8 feet and a width of 15 feet, and walls have been constructed of 

 solid masonr}" for a large portion of the distance, with retaining walls 

 where necessary. Besides the danger of floods from the canyon, the 

 lower part of the grounds, including the pond S3^stem, is subject to 

 overflow from Spearflsh Creek, and to guard against this, 90 feet of 

 stone wall was built. This wall, however, with a new bridge, was 

 washed away during the extreme high water last spring. The water 

 supply has been increased by the erection of a new cement dam which 

 will open up a series of springs near the head of the canyon, and the 

 reservoir has been lowered 8 feet to accommodate this extra supply. 

 Much grading about the grounds and reconstruction of roadways has 

 been necessitated by these changes. 



At the flsh ponds in Washington, which are in the park system, 

 much has been done toward beautif3^ing and improving the grounds to 

 bring them into accord with their surroundings, and this work is still 

 in progress. The ponds have been altered to meet the present require- 

 ments, and the supply and waste-pipe system has been modernized. A 

 triafigular frame storage building 58 b}" 51 by 50 feet has l^een erected, 

 containing much-needed workrooms and storerooms. 



At Nashua, N. 11., direct connection has been made witli the city 

 water system for protection against fire and to afford an emergency 

 supply for the ponds, hatchery, and other buildings. Sewers have been 

 laid, the piping system in the hatchery augmented, and all the build- 

 ings put in good repair. 



At Northville, Mich., a series of 5 ponds, covering about 3 acres, has 

 been sufficiently completed to allow the propagation of small -mouth bass 



