1823 .J on Gas Light Establishments, 3 



gas per hour: now among the pubhc lights are estimated what I 

 have termed occasional lights, such as are used at the theatres, 

 pubhc bodies, churches, meeting houses, &c. which, upon an 

 average, consume a much smaller quantity of gas than the pri- 

 vate lights, instead of equalling the public. In the Westminster 

 station, the number of these occasional lights is stated, the pri- 

 vate lights being 10,660, the pubhc or street ditto 2,248, and the 

 occasional 3,894. In the other stations, the number of public 

 bodies is given without stating the number of lights. I have, 

 therefore, assumed they are only one half; the whole number, 

 therefore, in the Chartered Company is 21,886 private, 3,452 

 public, and 5,097 occasional lights, for which a rental is paid of 

 125,977/. According to the rate of charges, a gas light burn- 

 ing from sunset till nine o'clock, pays 4/. per annum. I have 

 estimated in a former paper that this upon an average burns for 

 20 hours per week, the estimate in the report is four hours per 

 night, or 24 hours per week. This extra allowance will account 

 for those lights which extend beyond nine o'clock, and for which 

 an extra charge is made. The nearest approximation then to an 

 average charge would be for each private hght, 4L 4*. The 

 average consumption of each burner where experiments have 

 been tried has always been stated to be 5 feet per hour, and it 

 is upon this quantity and price I have founded my calculation. 

 A private light burning four hours, 5 feet per hour, consumes 

 20 feet per night, which, multiplied by 3 13, the number of days, 

 amount to 6,260, which again multiphed by 21,886, the number 

 of lights, will give the whole quantity consumed by the private 

 at 137,006,360 feet, and at 4/. 45. per hght, the rental of these 

 will amount to 91,921/. or about 13s. 6d. per 1000 feet. 



The public or street lights are I understand usually charged at 

 51. 5s. each ; they are estimated to burn the same quantity as 

 the private lights, and the average time of burning per night 

 throughout the year is nearer ten than nine hours, the nightly 

 consumption of each light then will average 50 feet for 365 nights, 

 and the annual 18,250, which, multiplied by 3,552, the number 

 of street lights, give 64,824,000. At 51. 5s. per light, the rental 

 of the public lights will amount to 17,981, or about 56*. 9d, per 

 1000 feet. 



The rental then for the private and public lights will amount 

 to 109,902/. which, deducted from the whole rental 125,977/. 

 leaves for occasional lights 1 6,075/. We may consider that the 

 charge for these lights will be at the same rate as the private 

 hghts, or 13.S. 6d. per 1000 feet, which would give a consump- 

 tion for the above-named sum, of 23,814,000 feet. By this mode 

 of calculating, the whole consumption of gas will amount to 

 225,644,360, leaving a deficiency for waste of 22,499,640, or 

 nearly 10 per cent. I have by the same method estimated the 

 consumption of the City of London Company, and the South 

 London Company. 



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