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Description of the process of manufacturing coal gas : for the lighting of streets houses, and public buildings, with elevations, sections, and plans of the most improved sorts of apparatus now employed at the gas works in London and the principal provincial towns of Great Britain : accompanied with comparative estimates exhibiting the most economical mode of procuring this species of light / by Fredrick Accum
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MANUFACTURING COAL GAS IN LONDON . 105

Brought over £. 14,945 13 9

Eighteen men at £ 1 . 6s. each manthe week, being nine for the (lav, andnine for the night.1216 16 0

£. 16,162 9 9

From which deduct4653 chaldron of saleableCoke, at <£.1 3s. thechaldron . . . . £. 5350 19 0

1163 chaldron of

A

small coke, or breeze,

at 10s. the chaldron . . 581 17 6

-£.5932 16 6

Cost of obtaining 37,230,000 cubicfeet of gas, according to procsss B, £.10,229 13 3Deduct the cost of Process A, 9174 12 3

Balance in favour of Process A. £. 1055 1 0

The reader will have no difficulty in calculatingfrom the preceding experiments, every variationwhich can possibly take place, as to the degree of