on gas tip to burn mwnost efficient when using a gas which is high in heat well alone. So the two gases have come very com- retorts heated to incandescenece, but, unlike water gas, units rather than in illuminants, are being received it cannot be carried direct to the holders, for it must monly to… … America they are at present not so much in evidence while coal in some localities is very cheap as abroad. There are to-day in continental Europe and the manufacture of coal gas would more than ascore of cities which operate their water- seem to be most economical, the making of laborers wheel in…
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