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SIR JOHN F. W. HERSCHEL, BART. K.H.
M.A. D.C.L. F.R.S.L. & E. Hon. M.R.I.A. F.R.A.S. F.G.S. M.C.U.P.S.
Correspondent ur Honorary Member of the Imperial, Royal, and National, Academies of Science
of Berlin, Brussels, Copenhagen, Gottingen, Haarlem, Massachusetts (U. S.), Modena
the Italian and Helvetic Societies;
Nantes, Padua, Palermo, Rome, Venice, Utrecht, and Wilna; the Philomathic Society of Paris; Asiatic Society of Bengal ; South African Lit, and Phil. Society ;
Literary and Historical Society of Quebec ; Historical Society of New York ;
Geographical Soc. of Berlin; Astronomical and
&c. &c. &c.
A NEW EDITION.
WITH NUMEROUS PLATES AND WOOD-CUTS.
Educ I 318.57,465
GEORGE ARTHUR PLIMPTON
JANUARY 25, 1924
Printed by T. K & P. G Collins
THE FOURTH EDITION
SEVERAL alterations and additions are made in this Edition, besides what have been introduced into the Third, to bring it up to the actual state of astronomical discovery. The elements of four new planets (Parthenope, Egeria, Victoria, and Irene) have been added, and improved elements of Iris, Metis, Hebe, and Hygeia, substituted for the provisional elements before given. The remarkable discovery of an additional ring of Saturn, and the curious researches of M. Peters on the proper motion of Sirius, with several minor features, are noticed. Where such additions are introduced in the text, they are indicated by being enclosed in brackets [ ].
J. F. W. HERSCHEL.
Inpdon, Aug 5. stil.