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Fires improv'd: being a new method of building chimneys, so as to prevent their smoaking: in which a small fire, shall warm a room better than a much larger made the common way. With the manner of altering such chimneys as are already built, so that they shall perform the same effects... / Written in French, by Monsieur Gauger: Made English and improved by J.T. Desaguliers... By whom is added, the manner of making coal-fires... The whole being suited to the capacity of the meanest workman. Public Domain Mark. Source: Wellcome Collection.