22 REPOET OF COMMISSIONER OF FISH AND FISHERIES. [20] 



Ft. In. 



Diameter of the high-pressure crank- pins 5f 



Length of the high-pressure crank-pins 7f 



Diameter of the low-pressure crank-pins 7£ 



Length of the low-pressure crank-pins 9 



Diameter of the high-pressure cross-head pins 3 



Length of the high-pressure cross-head pins 4J 



Diameter of the low-pressure cross-head pins 3£ 



Length of the low-pressure cross-head pins 5 



Diameter of the line-shafts ( wrought iron) 8 



Length in the vessel occupied by the engines 9 4 



Breadth in the vessel occupied by the engines 15 6 



Height of the engines above center line of shafts 12 6 



The following is a list of the weights of the main engines : 



CAST IRON. 



Pounds. 



2 condenser covers 2, 738 



1 condenser 12,010 



4 cylinders 14, 820 



1 bed-plate 15,412 



2 " pinch- wheels " (couplings) 3,210 



2 " crank-wheels" (couplings) 3,270 



4 slide-valves 1, 568 



1 double air-pump and bed 2, 750 



4 steam-chests 2, 520 



4 steam-chest covers 2, 084 



10 eccentrics 1, 188 



4 pistons 1,58C 



4 line-shaft couplings 2, 130 



12 thrust-collars r 2, 260 



4 cylinder-heads 2,509 



2 stern-bearings 4,897 



2 thrust-bearings 2, 655 



2 throttle-valve chambers 448 



2 screw-propellers : 8,076 



2 stern-pipes 1,376 



BRONZE CASTINGS. 



4 tube sheets (condenser) 4, 098 



2 stern-bushings 257 



2 shaft-bnshings 663 



2 air-pump plungers 1, 030 



Clink-blocks 101 



PHOSPHOR-BRONZE CASTINGS. 



6 lower boxes for crank-shaft 836 



IRON FORGINGS. 



2 shafts 19,043 



4 hangers 5, 480 



4 connecting-rods 2, 266 



4 straps, gibs, and keys 054 



4 double-cranks 7, 680 



4 crank-pins 990 



4 coupling-pins 764 



6 valve-stems 590 



5 links 786 



