Excerpt from An Account of the Foundation and Work of the Blue Hill: Meteorological ObservatoryTri-daily eye observations at 7 A. M., 3 and 11 P. M., synchronous with and similar to those of the Signal Service, were begun Feb. 1, 1885, and continued until April 1, 1886, without an omission. In one case, only, was an observation taken an hour late. A summary of these observations for the year ending Jan. 31, 1886, together with the summary of t...
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