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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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EXPERIMENTS ON TIIE METHODS

Expenditure o f Process B.

Coal, decomposed, 85 chaldron, 27bushels, at c £2. lLs\ 6 d. thechaldron.£ 220 16 101

Small Coal, 21 chaldron, 16 bushels,

used for fuel, at £2. 2s. the chaldron 45 0 8

/ Total expenditure, £.265 17 6?

*

Products of Process B.

Coke, 100 chaldron, at £ 1. 7s. thechaldron .... . . . £ 135 0 0

Breeze, or small coke, 3 chaldron, at

18s. the chaldron. 2 14 0

Coal tar, 6 Tons, 8 Ca t. at <£6. the

ton. 38 8 0

Ammoniacal liquor, 1536 gallons, at

1 id. the gallon. 9 12 0

Gas, 857,667 cubic feet of, at 15s.

the thousand cubic feet . . . 643 5 0

Total for products, ,£.828 19 0