Specification of William Smith and Donald Bethune
Subtitle: chimneys and furnaces
Contributors: Bethune, Donald
Publisher: Great Seal Patent Office
Published: 1857
Place of publication: London
Language: eng
Subjects: Smoke prevention; Furnaces; Chimneys
Notes: Cover title.

At head of title: A.D. 1856. No. 3063.

"William Smith, of number eighty-five, Margaret Street, Cavendish Square, London, engineer, and Donald Bethune, of Cambridge Terrace, Hyde Park, London, esquire".