AT the request of the Board of Trade and other Government departments, the Fuel Research Board has undertaken an investigation on the most suitable composition and quality of gas, and the minimum pressure at which it should be supplied, having regard to the desirability for economy in the use of coal, the adequate recovery of by-products, and the purposes for which coal is now used. The Research Board will also act in an advisory capacity. With the great extension of the use of gas for power and heatins, and the possibility of using efficiently for illuminating purposes, by means of the incandescent mantle, ga of much lower illuminating value than formerly, more importance now attaches to calorific value than to candle-power. Practice has necessarily conformed to the altered conditions, for gas engineers have gone a good way in solving the problems involved in making the best use of coal in their industry, in the recovery of by-products, on which success so much depends, together with supplying a gas satisfactory for the wide and varied requirements. The industry has indeed been exceptional in the valuable research work done, its enterprise being shown in the establishment of the Livesey Laboratory at Leeds.
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