Just published, 8vo, cloth, 16s. 



SPHERICAL ASTRONOMY. 



By F. Bruennow, Ph.D. 



Translated by the Author from the second German edition. 



INTRODUCTION.— Transformation of Coordinates.— Formulae of Spherical 

 Trigonometry. — The Theory of Interpolation. — Theory of several definite Inte- 

 grals used in Spherical Astronomy. — The Method of Least Squares.— The deve- 

 lopment of periodical Functions from given numerical Values. 



FIRST SECTION.— The Celestial Sphere and its Diurnal Motion. 



SECOND SECTION.— On the Changes of the Fundamental Planes to which 

 the places of the Stars are referred. 



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"SILLIMAN'S JOURNAL." 

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 Edited by 

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 and 

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 Prof. Louis Agassiz, of Cambridge, U.S. 

 Dr. Wolcott Gibbs, of New York, U.S. 

 Prof. S. W. Johnson, Scientific School of Yale College; and 

 Prof. George J. Brush, Scientific School of Yale College. 



This work has now been established more than forty years, and is the only 

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April 1863. 



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