. Journal of Natural Philosophy, Chemistry and the Arts . 1t^rtry^^r?7^/a ,y\flAo/>&yt^/^^^^<xJ. otc u?ote/e/.. oy/e /cv I JOURNAL OF NATURAL PHILOSOPHY, CHEMISTRY AN© THE ART S. MAY, 1807. ARTICLE I. Description of a New Astrometer for finding the Risingand Setting of the Stars and Planets, and their Positionin the Heavens. By David Brewster, A. M. To Mr. NICHOLSON,SIR, J^N astrometer for finding the rising and setting of the Description ofstars, was invented about thirty years ago, by M. Jeurat, ^^j. detemin-of the Academy of Sciences at Paris, and is described in
. Journal of Natural Philosophy, Chemistry and the Arts . 1t^rtry^^r?7^/a ,y\flAo/>&yt^/^^^^<xJ. otc u?ote/e/.. oy/e /cv I JOURNAL OF NATURAL PHILOSOPHY, CHEMISTRY AN© THE ART S. MAY, 1807. ARTICLE I. Description of a New Astrometer for finding the Risingand Setting of the Stars and Planets, and their Positionin the Heavens. By David Brewster, A. M. To Mr. NICHOLSON,SIR, J^N astrometer for finding the rising and setting of the Description ofstars, was invented about thirty years ago, by M. Jeurat, ^^j. detemin-of the Academy of Sciences at Paris, and is described in the ing the appa-Memoirs of that learned body. The utiiity of this instru-,^ jj^g^j^^g^;,,ment in abridging the computation of semidiurnal arcs,where great precision is unnecessary, renders It highly in-teresting to those who are engaged in the study or practiceof astronomy, and has induced me to send you the descrip-tion of a new astrometer, more simjiie in its construction,and more extensive in its application, than that inventediry M. Jeurat. This astrometer, represented in Plate 11. Fig. 1. consistsof four divided circumfereace
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Keywords: ., bookcentury1800, bookdecade1800, bookpublisherlondon, bookyear180
