A View of the 100-foot Dome in Which the Largest Telescope in the World is Housed. (Courtesy, Mt. Wilson Solar Observatory.)
Mount Chimborazo, Near the Equator. An observatory located on this mountain would make it possible to study the phenomena of northern and southern skies from the same point. (Courtesy, Pan-American Union.)
Lick Observatory, on the Summit of Mt. Hamilton, About Twenty-Five Miles S. W. of San Jose, California. It contains the famous Lick telescope, a 36-inch refractor.
Near View of the Eye-End of the Yerkes Telescope. The eyepiece is removed and its place taken by a photographic plate.