Abstract
ASTRONOMICAL circles will miss the familiar figure of H. P. Hollis, who died on August 7 at the age of eighty-one years. Hollis was born on January 9, 1858, and was educated at Westminster, from which he went to Jesus College, Cambridge. He took his degree in 1880 and in the following year was appointed to the post of assistant at the Royal Observatory, Greenwich, where he remained for forty years, retiring in 1920. His work at first was connected with the regular astronomical observations with the transit and altazimuth instruments; but later he took part in the measurement and reduction of solar photographs. Among his various other activities must be mentioned his work in the determination of the difference of longitude between Greenwich and Paris. The reductions of the observations made in 1892 and also in 1901 were carried out under his directions. In 1896 he was promoted to a higher grade and took charge of the work of the Astrographic Chart and Catalogue. A record of his twenty-four years in this department is found in the two volumes which give the positions of the stars as measured on the photographs and also the photographic reproduction of the chart plates, as well as in the two other volumes supplementing those results.
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Mr. H. P. Hollis. Nature 144, 470–471 (1939). https://doi.org/10.1038/144470a0
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DOI: https://doi.org/10.1038/144470a0