A dictionary of architecture and building; biographical, historical and descriptive (1901)
Sturgis, Russell, 1836-1909 · New York, Macmillan · leaf 248
of a mill; i.e. a funnel-shapedor reversed hollow conical or pyramidal objectof any sort, or something approximating to thatshape. Thus, in simple appliances for ventda-tion, a hopper casement is a piece of sash havinga slope outward and upward, allowing air to enterat the top; and the term is…
Architecture
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