A dictionary of architecture and building : biographical, historical, and descriptive (1902)
Sturgis, Russell, 1836-1909 · New York : The Macmillan company · leaf 577
o provide fordrawing away the accumulations of hot air thatusually form underneath the steep galleries.When the bell or valve in the central dome ispartially closed the pressure of the outgoing airis increased underneath the balcony and gallery,so that the proportion of air forced to go out atthese… … 2o H 083 984 PLATE XXXV
Architecture · Architects
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