Appleton's annual cyclopedia and register of important events: embracing political, military, an ecclesiastical affairs; public documents; biography, statistics, commerce, finance, literature, science, agriculture, and mechanical industry . s and in-struments; an account of the engineering andbuilding at Mount Hamilton in 1880-85; ob-servations of the transits of Mercury in 1881,and of Venus in 1882; geological reports; me-teorological observations, 1880-85; reduction-tables for Lick Observatory. instruments. (See Annual Cyclopaedia for1885, page 54.) New American Observatories.—The Denver Uni
Appleton's annual cyclopedia and register of important events: embracing political, military, an ecclesiastical affairs; public documents; biography, statistics, commerce, finance, literature, science, agriculture, and mechanical industry . s and in-struments; an account of the engineering andbuilding at Mount Hamilton in 1880-85; ob-servations of the transits of Mercury in 1881,and of Venus in 1882; geological reports; me-teorological observations, 1880-85; reduction-tables for Lick Observatory. instruments. (See Annual Cyclopaedia for1885, page 54.) New American Observatories.—The Denver Uni-versity Observatory, of Colorado, is to be pro-vided with new observatory buildings and anew refracting telescope with 20-inch object-glass. The telescope is to be mounted 5,000feet above sea-level, or 800 feet higher thanthe great Lick telescope. Mr. H. B. Chamber-lain, of Denver, is the donor. The Dearborn Observatory, of Chicago, is be-ing removed to Evanston (within a few milesof Chicago). It will be placed on a site 250feet from Lake Michigan. It is expected thatthe 18^-inch equatorial will be remounted in itsnew home in January, 1889. Foreign Observatories.—The report of the Pul-kowa Observatory for 1887 says that the 30-. LICK OBSERVATORY. Mr. Keeler has recently shown that the see-ing m winter is not especially better at the ob-servatory than at lower elevations. At othertimes the secret of the steady seeing at MountHamilton lies in the coast fogs. These roll infrom the sea every afternoon in the summer,rising from 1,500 to 2,000 feet. They coverthe hot valley, and keep the radiation from itshut in. There are no fogs in day-time, andfew in winter. The complete instrumental equipment of theobservatory is as follows: equatorials of 36,12,and 6| inches aperture, a 4-inch comet-seeker,photoheliograph, 6-inch meridian circle, de-clinograph, 4-inch transit and zenith telescopecombined, 2-inch universal instrument, threechronographs, five independent clocks, besidescontro
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Keywords: ., bookcentury1800, bookdecade1870, bookidappletonsann, bookyear1875
