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The weekly consumption of coal is reckoned at 42 bushels for each retort, amounting to about 602 chaldrons; and taking the average number of retorts worked at this station at about 153, would give an annual consumption of coals of upwards of 9,282 chaldrons, producing 111,384,000 cubic feet of gas.
The consumption of London seemed to the writers of that age enormous, and was often mentioned by them as a proof of the greatness of the imperial city. They scarcely hoped to be believed when they affirmed that two hundred and eighty thousand chaldrons that is to say, about three hundred and fifty thousand tons, were, in the last year of the reign of Charles the Second, brought to the Thames.
The quantity of coals carbonized amounted to 8,840 chaldrons; produced 106,080,000 cubic feet of gas. The South London Gas-Light and Coke Company, at Bankside: The number of retorts was 140; gasometers 3; the contents of the whole 41,110 cubic feet; and their mains from 30 to 40 miles in length.
His load, however, at the utmost, could not have been more than a few bushels, whereas mine was exactly one hundred and thirty-five chaldrons and seven tubs.
Thomson, in the Annals of Philosophy, has calculated that the coal of these districts, at the present rate of consumption, will last 1,000 years! but his calculations are founded on data manifestly erroneous, and at variance with his own statements; for he assumes the annual consumption of coal to be only two million eight hundred thousand tons, and the waste to be one-third more, making three million seven hundred thousand tons, equal to as many square yards; whereas he has just before informed us, that two million chaldrons of coal, of two tons and a quarter each chaldron, are exported, making four million five hundred thousand tons, beside inland consumption, and waste in the working . According to Mr.
A brickmaker being hired by a brewer to make some bricks for him at his country-house, wrote to the brewer that he could not go forward unless he had two or three loads of spanish, and that otherwise his bricks would cost him six or seven chaldrons of coals extraordinary, and the bricks would not be so good and hard neither by a great deal, when they were burnt.
In the brickfields at Uxbridge, near the Drayton Station, one of the brickmakers alone will frequently contract for fifteen or sixteen thousand chaldrons of this cinder-dust, in one order. Fine coke, or coke-dust, affects the market at times as a rival; but fine coal, or coal-dust, never, because it would spoil the bricks.
There are about sixty ingenios driven by water, for bruising the canes and pressing out the juice, which is boiled in vast chaldrons, after which it is poured into pans in the shape of sugar-loaves, holding from fifteen to twenty pounds each, in which it is purified by means of ashes.
The Vice-Principal's allowance of fuel for the entire year was reduced to "30 cords of maple wood and 2 chaldrons of coal." Frequently appeals were made to the Home Government for assistance, but the authorities disagreed in their opinions on the actual state of the College. They had little first-hand knowledge of the facts, and their attitude was one of indifference or at least delay.
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