UNDER the presidence of Mr. J. Wilkinson of Nottingham, the Institution of Gas Engineers held its annual meeting in London on June 14–16. Mr. T. Carmichael discussed the economics of carbonisation of the Portsmouth Gas Company, where a wide range of plant is at work. The cost of production of gas in vertical and horizontal retorts showed no great difference and is only half that of the cost of producing carburetted water gas. There is then no incentive to produce gaseous fuel from oil at the present time, so far as cost of production is concerned. Mr. G. M. Gill described types of modern chamber ovens and coke ovens and discussed their suitability as carbonisation units for gas-works purposes. Mr. T. Canning devoted a paper to the relations of a gas undertaking to its consumers. The pre-carbonisation of coal before combustion is to-day kept constantly in the public eye. The town's gas industry is carrying out such processes under strictly commercial conditions, and is the only industry doing so on a national scale. Its results and experiences as indicated by these papers deserve close study by all advocates of coal carbonisation.