Dudley Observatory, American Astronomical Society, American Institute of Physics · New York [etc.] American Institute of Physics [etc.] · leaf 252
Observations of Psyche, Themis, the Thirty-First Asteroid, and Comet 1654, IV., made with the Filar-Micrometer of the Washington Equatorial, by James Ferguson, Esq.The Investigation of the Catenary upon a Cone of Revolution with a Veitical Axis, by Professor Benjamin Peirce.Observation of the… … ASTRON OMICAL JOU RN AL . VOL. IV. PL. 2. J. NO. 5. nicated,ants thethe mi-glass ofa com-3ad, re-; easily Victorto WestlineteenjondingKgraphs;ye-endinchesis werelue capif time,to have ■ough a3 cusps)sentede doneken atlecameries by rid that ng the With Qg the
Astronomy
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