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They compass the whole sweep of Celestial Geometry, and stamp their seer as unapproachably the greatest of astronomers, as well as one of the chief benefactors of mankind. The announcement of Kepler's first two laws was made in his New Astronomy, "Astronomia Nova, seu Physica Caelestis, tradita Commentariis de Motibus Stellae Martis: Ex Observationibus G.V. Tychonis Brahe." Folio. Prague: 1609.
"Est enim Astronomi proprium, historiam motuum coelestium diligenti et artificiosa observatione colligere. Deinde causas earundem, seu hypotheses, cum veras assequi nulla ratione possit ... Neque enim necesse est, eas hypotheses esse veras, imo ne verisimiles quidem, sed sufficit hoc usum, si calculum observationibus congruentem exhibeant."
He always declared he caught many a cold in the ascetic Cardinal's "cold house." An old pupil truly says Sir Andrew had the rare faculty of surveying the conditions and circumstances of each one, gathering them up, and clearly seeing what was best to do. Professor Sheridan Delapine says: "He was specially fond of quoting Sydenham's words: 'Tota ars medici est in observationibus."
To his disappointment an accident brought his undertaking to the knowledge of his father and mother before it was completed. He always had a boyish regret that his little plot had been betrayed before the moment for the denouement arrived. J.W. de Spix". Digessit, descripsit et observationibus illustravit Dr. MUNICH, July 27, 1828. . . .Various things which I have begun keep me a prisoner here.
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