4 REPORT OF COMMISSIONER OF FISH AND FISHERIES. 



work has consisted not only in the machine work incident to the 

 necessary overhauling* and repairs to the steam launches and machinery 

 of Central Station, Fish Ponds, Bryan Point Station, and Battery 

 Station, but considerable machine work has been done in the above- 

 mentioned shop for the Putin-Bay, Duluth, Gloucester, and Woods 

 Hole stations, as also repairs, alterations, and new work to the circu- 

 lating and steam plants of cars ISTos. 1, 2, 3, and 4. 



For many years there was located on the third floor at Central Sta- 

 tion a cylindrical wooden supply tank for supplying fresh water to the 

 hatching tables. It was found advisable to discontinue this weight 

 upon the floor. The tank was therefore removed, and a 3-inch Watson 

 & McDaniel water-pressure regulating valve was purchased and con- 

 nected in the main supply system, which proved entirely satisfactory. 



The small vertical launch boiler, which was located in the machine 

 shop at Central Station to assist the 15-horsepower horizontal boiler in 

 heating Central Station and the general offices of the Commission, was 

 removed from the shop and erected on car No. 4 to furnish steam for 

 the water and air circulating plants on that car. This boiler being too 

 small to properly assist in heating Central Station and general oftices, 

 it was found necessary to make some new arrangement for the increase 

 of boiler power of this station. It was therefore decided to build a 

 new boiler house of sufficient size to allow the introduction of a new 

 30-horsepower boiler. This boiler was purchased, but after its purchase 

 it was found that the new boiler house could not be erected; and as 

 such a boiler was needed at Woods Hole, it was transferred to that 

 station and there erected. 



The steam launch Blue Wing was hauled out on the railway and 

 several seams in the hull were calked. The old cabin of this steamer 

 was torn down and a new one erected, the inside and outside were 

 thoroughly painted, the boiler and pumps were overhauled, and exten- 

 sive repairs were made to the engine. 



The steamer Petrel was hauled out on the railway, several pieces of 

 rotten plank were removed, and new plank substituted. The moldings 

 around upper deck were renewed, the forward part of the hurricane 

 deck was cut, and a pilot house built. The side curtains were altered. 

 The engine, pumps, boiler, and their attachments were thoroughly over- 

 hauled and repaired. The steamer was painted and varnished inside 

 and out. A set of automatic water-glass gauge cocks were put on the 

 boiler. A new steering gear was made and introduced. 



The steamer Canvasback was hauled out on the railway and the hull 

 repaired. The boiler of this steamer being old and worn out, a vertical 

 steel boiler was purchased, erected, and connected, and the engine and 

 pumps were overhauled and thoroughly repaired. 



In order to haul the steamers and other boats out at Battery Island 

 Station, Maryland, a marine railway was constructed and introduced. 

 During a heavy gale here the steamer Plover was sunk by having a 

 hole punched through the planking in her hull below the water line. 



