_Total Cost per Hour and per Lamp._
Legend for Table V.
A = Number of hours’ work per year.
B = Number of hours’ work per day.
C = Steam-engine (existing).
D = Hydraulic Motor.
E = Steam-engine to be erected.
F = Gas engine
G = (1) Gas at 6_s._ 9_d._ per 1,000 ft.
H = (2) Gas at 8_s._ 9_d._ per 1,000 ft.
--------+------+--------+--------+---------+---------+-------+------
| | | | | | |
A | B | C | D | E | F | G | H
| | | | | | |
--------+------+--------+--------+---------+---------+-------+------
| | Pence. | Pence. | Pence. | Pence. | Pence.| Pence.
500 | 1·38 | 0·485 | | 1·055 | 1·216 | 0·418 | 0·552
800 | 2·19 | 0·371 | | 0·780 | 1·007 | 0·399 | 0·513
1,200 | 3·29 | 0·314 | | 0·608 | 0·865 | 0·380 | 0·352
3,600 | 9·87 | 0·219 | 0·152 | 0·352 | 0·485 | 0·361 | 0·465
Arc Lamps.
500 | 1·38 | 5·235 | 4·246 | 10·459 | 11·485 | |
800 | 2·19 | 3·971 | 3·089 | 7·552 | 9·272 | |
1,200 | 3·29 | 3·087 | 2·441 | 6·004 | 7·581 | |
3,600 | 9·87 | 2·185 | 1·510 | 3·591 | 5·586 | |
--------+------+--------+--------+---------+---------+-------+------