Larger houses with several sources of heat--fireplaces and furnaces--need several chimneys.  This was typical of the late 19th century.  Almost all houses after the 1920s only needed one chimney because central furnaces had become the standard way of heating. Now examine TWO OR MORE CHIMNEYS

  Created by Chad Enloe & Kent Marcelle--July 1, 1996; Declan Green, Samantha Murray, Dave Whyte on 8 June 1997.