Title A practical description of Herron's patent trellis railway structure ... [microform] also, the patent wrought iron railway chairs, new and improved mode of joining the ends of railway bars, scarfing timbers, and improved fastenings: illustrated by four large plates of working plans ... with a compendious account of the process of kyanizing, in use on the English railways, for preserving the timber from decay: and the recent discoveries of M. Boucherie by means of the pyrolignite of iron ... by James Herron ...