| Time of Burning per annum. | No. of Hours. [D] | 3 Jets. | Small Argand. | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cub. ft. 2 | Cub. ft. 21⁄2 | Cub. ft. 3 | Cub. ft. 31⁄2 | Cub. ft. 4 | Cub. ft. 41⁄2 | ||||||||||
| From Dusk to | 8 | o’clock | 781 | ·64 | ·5132 | ·4268 | ·3658 | ·3201 | ·2846 | ||||||
| ditto and Sundays | 902 | ·554 | ·4434 | ·3695 | ·3168 | ·2771 | ·2464 | ||||||||
| ditto and from 6 o’clock mornings | 1050 | ·476 | ·381 | ·3174 | ·272 | ·2381 | ·2116 | ||||||||
| ditto and Sundays and from ditto | 1172 | ·426 | ·3412 | ·2844 | ·2438 | ·2133 | ·1896 | ||||||||
| 9 | o’clock | 1054 | ·474 | ·3794 | ·3162 | ·271 | ·2371 | ·2108 | |||||||
| ditto and Sundays | 1221 | ·409 | ·3376 | ·273 | ·234 | ·2047 | ·182 | ||||||||
| ditto and from 6 o’clock mornings | 1323 | ·378 | ·3022 | ·2519 | ·2158 | ·1889 | ·1678 | ||||||||
| ditto and Sundays and from ditto | 1490 | ·335 | ·2684 | ·2236 | ·1918 | ·1675 | ·1492 | ||||||||
| 10 | o’clock | 1367 | ·366 | ·2926 | ·2438 | ·209 | ·1829 | ·1626 | |||||||
| ditto and Sundays | 1586 | ·315 | ·2522 | ·2101 | ·1802 | ·1576 | ·14 | ||||||||
| ditto and from 6 o’clock mornings | 1636 | ·305 | ·2444 | ·2037 | ·1746 | ·1528 | ·1358 | ||||||||
| ditto and Sundays and from ditto | 1855 | ·269 | ·2156 | ·1796 | ·154 | ·1347 | ·1198 | ||||||||
| 11 | o’clock | 1680 | ·297 | ·238 | ·1984 | ·17 | ·1488 | ·133 | |||||||
| ditto and Sundays | 1951 | ·256 | ·2048 | ·1707 | ·1466 | ·1281 | ·1138 | ||||||||
| ditto and from 6 o’clock mornings | 1949 | ·256 | ·2052 | ·171 | ·1466 | ·1282 | ·114 | ||||||||
| ditto and Sundays and from ditto | 2220 | ·225 | ·1802 | ·1501 | ·1286 | ·1126 | ·1 | ||||||||
| 12 | o’clock | 1993 | ·251 | ·2006 | ·1672 | ·1434 | ·1254 | ·1114 | |||||||
| ditto and Sundays | 2316 | ·215 | ·1726 | ·1439 | ·1236 | ·1079 | ·0958 | ||||||||
| ditto and from 6 o’clock mornings | 2262 | ·221 | ·1768 | ·1476 | ·1274 | ·1105 | ·0982 | ||||||||
| ditto and Sundays and from ditto | 2585 | ·193 | ·1546 | ·1289 | ·1104 | ·0967 | ·0858 | ||||||||
| 1 | o’clock | 2306 | ·217 | ·1734 | ·1445 | ·1238 | ·1080 | ·0962 | |||||||
| ditto and Sundays | 2681 | ·186 | ·1492 | ·1243 | ·1066 | ·0932 | ·0828 | ||||||||
| ditto and from 6 o’clock mornings | 2575 | ·194 | ·1552 | ·1294 | ·111 | ·0971 | ·0862 | ||||||||
| ditto and Sundays and from ditto | 2950 | ·169 | ·1356 | ·113 | ·0968 | ·0847 | ·0754 | ||||||||
| All night | 4327 | ·115 | ·6924 | ·077 | ·066 | ·0578 | ·0515 | ||||||||
| To use the Table.—Select the hour to which it is agreed the gas is to burn,—9, 10, 11 o’clock, Sundays, &c., as the case may be, and the description of the burner.—Multiply the decimal number opposite to it by the amount in shillings agreed to be paid per annum, and the product will be the sum received per m. cubic feet for the gas. | |||||||||||||||
| Example.—Suppose a small argand which should burn 31⁄2 feet per hour, is agreed for till 9 o’clock at 2l. per annum. Look along the line of 9 o’clock till you arrive at the column of 31⁄2 feet per hour, and you find the number, ·271. Multiply this number by 40s. and the result gives 10s. 10d. per m. cubic feet. But suppose instead of keeping to 9 o’clock the party burns till 1 o’clock, Sundays and mornings, and by enlarging the holes or height of flame consumes 8 cubic feet of gas per hour; then you have the number, ·0424, which multiplied by 40s., still the price paid, gives 1s. 8d. per m. cubic feet only, and so on for any greater or lesser variation of the agreement. | |||||||||||||||
| [D] The “number of hours” includes 1⁄4 of an hour allowed for shutting shops, and 1 hour’s extra burning on Saturday nights. | |||||||||||||||
| Time of Burning per annum. | No. of Hours. [D] | Large Argand. | Fancy and extravagant Burners. | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cub. ft. 5 | Cub. ft. 6 | Cub. ft. 7 | Cub. ft. 8 | Cub. ft. 9 | Cub. ft. 10 | ||||||||||
| From Dusk to | 8 | o’clock | 781 | ·2561 | ·2134 | ·1829 | ·16 | ·1423 | ·128 | ||||||
| ditto and Sundays | 902 | ·2217 | ·1848 | ·1584 | ·1383 | ·1232 | ·1108 | ||||||||
| ditto and from 6 o’clock mornings | 1050 | ·1905 | ·1587 | ·136 | ·119 | ·1058 | ·0952 | ||||||||
| ditto and Sundays and from ditto | 1172 | ·1706 | ·1422 | ·1219 | ·1067 | ·0948 | ·0853 | ||||||||
| 9 | o’clock | 1054 | ·1897 | ·1581 | ·1355 | ·1185 | ·1054 | ·0948 | |||||||
| ditto and Sundays | 1221 | ·1638 | ·1365 | ·117 | ·1024 | ·091 | ·0819 | ||||||||
| ditto and from 6 o’clock mornings | 1323 | ·1511 | ·1259 | ·1079 | ·0945 | ·0839 | ·0755 | ||||||||
| ditto and Sundays and from ditto | 1490 | ·1312 | ·1118 | ·0959 | ·0839 | ·0746 | ·0671 | ||||||||
| 10 | o’clock | 1367 | ·1463 | ·1219 | ·1045 | ·0914 | ·0813 | ·0731 | |||||||
| ditto and Sundays | 1586 | ·1261 | ·1051 | ·0901 | ·0789 | ·07 | ·0630 | ||||||||
| ditto and from 6 o’clock mornings | 1636 | ·1222 | ·1019 | ·0873 | ·0764 | ·0679 | ·0611 | ||||||||
| ditto and Sundays and from ditto | 1855 | ·1078 | ·0898 | ·077 | ·0674 | ·0599 | ·0539 | ||||||||
| 11 | o’clock | 1680 | ·119 | ·0992 | ·085 | ·0744 | ·0665 | ·0595 | |||||||
| ditto and Sundays | 1951 | ·1024 | ·0854 | ·0733 | ·064 | ·0569 | ·0512 | ||||||||
| ditto and from 6 o’clock mornings | 1949 | ·1026 | ·0855 | ·0733 | ·0641 | ·057 | ·0513 | ||||||||
| ditto and Sundays and from ditto | 2220 | ·0981 | ·0751 | ·0643 | ·0563 | ·05 | ·045 | ||||||||
| 12 | o’clock | 1993 | ·1003 | ·0836 | ·0717 | ·0627 | ·0557 | ·0502 | |||||||
| ditto and Sundays | 2316 | ·0863 | ·0719 | ·0618 | ·0539 | ·0479 | ·0432 | ||||||||
| ditto and from 6 o’clock mornings | 2262 | ·0884 | ·0737 | ·0637 | ·0552 | ·0491 | ·0442 | ||||||||
| ditto and Sundays and from ditto | 2585 | ·0773 | ·0645 | ·0552 | ·0483 | ·0429 | ·0387 | ||||||||
| 1 | o’clock | 2306 | ·0867 | ·0723 | ·0619 | ·0542 | ·0481 | ·0434 | |||||||
| ditto and Sundays | 2681 | ·0746 | ·0621 | ·0533 | ·0466 | ·0414 | ·0373 | ||||||||
| ditto and from 6 o’clock mornings | 2575 | ·0776 | ·0647 | ·0555 | ·0485 | ·0431 | ·0388 | ||||||||
| ditto and Sundays and from ditto | 2950 | ·0678 | ·0565 | ·0484 | ·0424 | ·0377 | ·0339 | ||||||||
| All night | 4327 | ·0462 | ·0385 | ·033 | ·0289 | ·0257 | ·0231 | ||||||||
| To use the Table.—Select the hour to which it is agreed the gas is to burn,—9, 10, 11 o’clock, Sundays, &c., as the case may be, and the description of the burner.—Multiply the decimal number opposite to it by the amount in shillings agreed to be paid per annum, and the product will be the sum received per m. cubic feet for the gas. | |||||||||||||||
| Example.—Suppose a small argand which should burn 31⁄2 feet per hour, is agreed for till 9 o’clock at 2l. per annum. Look along the line of 9 o’clock till you arrive at the column of 31⁄2 feet per hour, and you find the number, ·271. Multiply this number by 40s. and the result gives 10s. 10d. per m. cubic feet. But suppose instead of keeping to 9 o’clock the party burns till 1 o’clock, Sundays and mornings, and by enlarging the holes or height of flame consumes 8 cubic feet of gas per hour; then you have the number, ·0424, which multiplied by 40s., still the price paid, gives 1s. 8d. per m. cubic feet only, and so on for any greater or lesser variation of the agreement. | |||||||||||||||
| [D] The “number of hours” includes 1⁄4 of an hour allowed for shutting shops, and 1 hour’s extra burning on Saturday nights. | |||||||||||||||
GENERAL SUMMARY.
For lighting London and its suburbs with gas, there are—
18 public gas works.
12publdo.gascompanies.
2,800,000l. capital employed in works, pipes, tanks, gas-holders, apparatus.
450,000l. yearly revenue derived.
180,000 tons of coals used in the year for making gas.