This is a reproduction of a book published before 1923. This book may have occasional imperfectionssuch as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process. We believe this work is culturally important, and despite the imperfections, have elected to bring it back into print as part of our continuing commitment to the preservation of printed worksworldwide. We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book.++++The below data was compiled from various identification fields in the bibliographic record of this title. This data is provided as an additional tool in helping to ensure edition identification: ++++ Astrographic Catalogue 1900.0 Greenwich Section Dec. +640 To 900: Measures Of Rectangular Coordinates And Diameters Of Star Images, Dec. +640 To +720; Volume 1 Of Astrographic Catalogue 1900.0 Greenwich Section Dec. +640 To 900: From Photographs Taken And Measured At The Royal Observatory, Greenwich; Royal Greenwich Observatory Royal Greenwich Observatory, William Henry Mahoney Christie Printed for H.M. Stationery off., by Neill and co., ltd., 1904 Science; Astronomy; Astrographic catalog and chart; Science / Astronomy; Stars