Coke, 103 chaldron, 12 bushel, at £ 1. 7s. the chaldron£ 139100
Breeze, or small coke, 6 chaldron, 9 bushels, at 18s. the chaldron5126
Tar, 73⁄4 tons, at £ 6. the ton46100
Ammoniacal liquor, 1864 gallons, at 11⁄2d. the gallon11130
Gas, 857,667 cubic feet, at 15s. the thousand cubic feet64350
Total for products,£ 846106

Hence the amount of expenditure for procuring 857,667 cubic feet of gas, is £ 360. 17s.

The value of the saleable products £ 846. 10s. 6d.

And the average proportion of gas obtained from one chaldron of Newcastle coal, 8,300 cubic feet.

Process B.

Number of
Days the
Retorts
were
worked.		Number
of
Retorts
in
action.		Quantity of Coal
decomposed for
obtaining Gas.		Quantity of Coal
used for Fuel.		Quantity
of Gas
produced.		Quantity
of Gas from
one Chaldron
of Coal.
Chaldron. Bushel.Chaldron. Bushel.Cubic
Feet.		Cubic
Feet.
Monday57  9-18 2-13 94,98710,000
Tuesday77 12-31 3- 8128,59710,000
Wednesday73 12- 8 3- 2122,18810,000
Thursday79 13- 4 3-10131,17610,000
Friday76 12-27 3- 7127,69610,000
Saturday77 12-27 3- 6127,53610,000
Sunday76 12-20 3- 6125,48710,000
103-1221-16857,66710,000[19]

[19] Average proportion of gas from a chaldron of coal.

Expenditure of Process B.

Coal, decomposed, 85 chaldron, 27 bushels, at £ 2. 11s. 6d. the chaldron£ 22016101⁄2
Small Coal, 21 chaldron, 16 bushels, used for fuel, at £ 2. 2s. the chaldron4508
Total expenditure,£. 2651761⁄2

Products of Process B.