REPORT OP COMMISSIONER OF FISH AND FISHERIES. 5 



The steamer was raised, hauled out on the railway, and hull repaired. 

 Extensive repairs were made to its engine and pumps, and a new pro- 

 peller wheel was purchased and put on. The boiler being old and worn 

 out, a new one was purchased and introduced. 



The independent air and feed pump in the steamer Curlew not being 

 satisfactory, a new one was made in machine shop at Central Station. 



The steamer Cygnet was hauled out on the railway and necessary 

 repairs made to the hull. The boiler and pumps were thoroughly over- 

 hauled, and extensive repairs were made to the engine. 



A new Scotch boiler was built for steamer Shear/cater, to take the 

 place of the Ward boiler now in the steamer. 



Since the introduction about eight years ago of boiler and pumps 

 for the water-circulating aud steam-heating plants in car No. 2, it was 

 found necessary to increase the capacity of this car for transporting 

 fry and hatching eggs en route, and as this necessitated an increase 

 of water circulation larger boiler and pumps were purchased, erected 

 and connected in same, the car almost entirely repiped, and the air 

 pump which was removed from car No. 4 erected and connected in order 

 to furnish aeration for transporting tanks. 



The 2o-horsepower horizontal boiler, which has been in use at the 

 Woods Hole Station for the past nine years, needed such extensive 

 repairs that it was condemned, and the 30-horsepower horizontal 

 boiler which had been purchased for Central Station was transferred 

 to the Woods Hole Station and erected in the boiler room. 



The G-ineh wooden suction pipe for the salt-water circulation at the 

 Woods Hole Station, which had been in continual use for the past nine 

 years, was in such bad condition that 225 feet of it was dug up, and 

 new pipe of the same make was laid. 



The G-iuch water cylinder of the main circulating pump at Battery 

 Island Station being worn out, a new water cylinder, 10 inches in diame- 

 ter, was purchased, and will be connected as soon as opportunity offers. 

 There was also purchased and erected at this station a 6,000-gallou 

 wooden supply tank for hatching apparatus, the old tank having been 

 washed away during one of the floods. 



As the water around the station at Lake Erie contains so much lime 

 in solution, which causes the accumulation of scale in large quantities 

 in the boilers, a pipe condenser was made in order to condense the 

 exhaust steam from the pumps and radiators, and a small air and feed 

 pump was transferred from the Woods Hole (Mass.) Station, and con- 

 nected to this condenser. This arrangement allowed the station to be 

 heated by the exhaust steam from pumps aud the condensed water to 

 be pumped back into the boilers. The arrangement has worked very 

 satisfactorily. 



As the gravity supply of the Duluth (Minn.) Station failed on several 

 occasions on account of drought or freezing up, the steam pumping 

 plant at this station was increased by the transfer from Battery Station 

 of a pump which was there in stock. The wells located on the shore 

 of the lake would not, during the severe cold of the winter, furnish 



