HARVARD OBSERVATORY

an institution for astronomical observation and research, established in 1843, by public subscription, as an annex to Harvard University. A branch station is established on a mountain 8,000 feet in altitude, near Are quip a, Peru. Among its most important instruments are one 15 inch and one 6 inch equatorial telescopes, one 8 inch transit circle, a 11 inch Draper photographic telescope, an 8 inch photographic telescope and a meridian photometer. The annals and records of the institution fill fifty volumes. A special grant was recently made by the Carnegie Institute for a study of the collection of photographs at the main observatory at Harvard. The amount of material, including photographs and photographic charts of the sky that have been collected require a special building for their accommodation. The Sears Tier of the Observatory was added in 1846 and two years later Edward Bromfield Phillips bequeathed the University $100,000 especially for the observatory. It has now an endowment fund of $900,000. Its staff consists of a director, four profe ors and 40 a ociates.