The successful application of charcoal air-filters to the ventilation and disinfection of sewers : a letter to the Right Honourable the Lord Mayor, William Cubitt, M.P. / by John Stenhouse.

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The successful application of charcoal air-filters to the ventilation and disinfection of sewers : a letter to the Right Honourable the Lord Mayor, William Cubitt, M.P. / by John Stenhouse. Public Domain Mark. Source: Wellcome Collection.

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This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.