1,460,000,000 cubic feet of gas made in the year.
134,300 private burners supplied to about 40,000 consumers.
30,400 public or street do. N. B. about 2650 of these are in the city of London.
380 lamplighters employed.
176 gas-holders; several of them double ones, capable of storing 5,500,000 cubic feet.
890 tons of coals used in the retorts on the shortest day, in 24 hours.
7,120,000 cubic feet of gas used in longest night, say 24th December.
About 2500 persons are employed in the metropolis alone, in this branch of manufacture.
Between 1822 and 1827 the quantity nearly doubled itself, and that in 5 years.
Between 1827 and 1837 it doubled itself again.