A dictionary of architecture and building; biographical, historical and descriptive (1901)
Sturgis, Russell, 1836-1909 · New York, Macmillan · leaf 24
he centre of the field of vision. The observing slit is 13 feet wide and extendsfrom the horizon to a point -5 feet beyond thezenith. It is closed by two shutters which work side- wise on rollers, and which move .simultaneously.Canvas curtains are mounted on tracks and can beadjusted so as to… … Observatory at Williams Bay (sek Next Figure) ; Groixd Floor.
Architecture
Internet Archive · University of Toronto, Robarts Library · Public Domain Mark 1.0. Free to use for anything.
