Description of the Process of Manufacturing Coal Gas, for the Lighting of Streets Houses, and Public Buildings With Elevations, Sections, and Plans of the Most Improved Sorts of Apparatus Now Employed at the Gas Works in London and the Principal Provincial Towns of Great Britain; Accompanied With Comparative Estimates, Exhibiting the Most Economical Mode of Procuring This Species of LightPART II.Chapter 222 wordsPublic domainOUTLINE OF THE NEW ART OF PROCURING LIGHT BY MEANS OF COAL GAS, AND THEORY OF THE PRODUCTION OF GAS LIGHTS 33