76 EEPORT OF COMMISSIONER OF FISH AND FISHERIES. [74] 



ill nightly use is iibout 47. The total cost of the light has been as 

 follows: 



13MfiJ tousofcoal $97 07 



92^ gallons of oil 55 50 



12 attachment plnga 3 90 



7 brushes 7 00 



5cut-ont blocks (additional) 1 70 



39 3-light safcty-idugs 2 73 



6 G-light .salcty-plngs 48 



1 2()-light saffty-plng 08 



11 40-light safcty-plngs 1 80 



9 key-sockets ■ 8 28 



4 pounds insulation compound 48 



5 feet of g-inch rubber tubing 30 



2 pounds insulation tai)e 96 



3 deep-sea lamps 3 00 



1 pou ud of No. 12 wire 40 



1 pint of solution of gntta-pcrcha 3 75 



4 cigar-lighter plugs 2 20 



f gross assorted screws 1 12 



7 ounces hydrochloric acid 1 31 



1 2-point switch 45 



2 electroliers 1 50 



141 lam]>s 141 00 



Tolal 335 01 



From this it appears that the light in can(lle-i)ower per horn" is cost- 

 ing lis f -, _- — ^^7= — ?.= ■ 0.0001 cent per honr : abont the cost of gas 

 \1482 x4< x8 / 



for an e(pial light in New York City. It is proper to add that the cost 

 of coal during this year has averjlged ns $0.99 per ton, and the entire 

 expense in fixtures, wires, &c,, are included, the item of labor alone 

 being omitted, for the reason that no extra hands are employed for this 

 purpose, the engine and dynamo being run by an enlisted man, in addi- 

 tion to his other duties in this department. 



COAL EXPENDITURES. 



During the year the expenditure of coal for the different purposes 

 has been divided, approximately, as follows: 



Tons. 

 Coal consumed while the main engines were in operation for propulsion of 



the ship, warming, pumping bilges, washing decks, and steering 864-2|f g- 



Coal consumed for lighting the ship (by electricity) 13^-40 



Coal consumed for ventilating 50|§ 2§ 



Coal consumed for distilling water 19^^!^ 



Coal consumed for warm'ing the ship, keeping banked fires, hoisting anchoi's 



and trawls, and pumping water while the main engines were not running. 735^''/()- 



Total coal consumed by the engineer's dejiartment 1022^^3 



Coal for cooking (equipment department) 54/2*4? 



