CONTENTS 



OF THE 



EDINBURGH JOURNAL OF SCIENCE, 



No. X. 



NEW SERIES. 



Art. I. Some Account of James Stirling, F. R. S. By S. P. Rigaud, 

 F. R. S. Savilian Professor of Astronomy in the University of Oxford. 

 Communicated by the Author, . • • 191 



II. Od a New Analysis of Solar Light, indicating three Primary Colours, 

 forming Coincident Spectra of equal length. By David Brewster, 

 LL. D. F. R. SS. Lond. and Ed. . • . 197 



I I I. Further Remarks on the alleged Polarization of Heat. By the Rev. 

 Baden Powell, M. A. F. R. S. Savilian Professor of Geometry in 



the University of Oxford. In a Letter to Dr Brewster, . 20C 



IV. On the General Equations for determining the Positions and Curva- 

 tures of Arches of Aurora Boreales, from observations made in one 

 place only; with Calculations for that of the 25th December 1830. 



By EL Potter Junior, Esq. Communicated by the Author, 209 



V. Contributions to Scientific Bibliography. By a Correspondent. 

 Communicated by the Author, . • • 219 



VI. Silver Ores reduced by the Method of Becquerel. By Andres del 



Rio. Communicated by a Correspondent, . . 222 



VII. A Letter from Charles Chevalier, Optician in Paris, to Dr Go- 

 ut nc, being an Answer to his Paper published in the Second Vo- 

 lume of the New Series of the Quarterly Journal of Science, p. 248, 

 entitled, " A Critique on the thick Aplanatic Object-Glasses for di- 

 vergent rays of Vincent Chevalier aine et fils." Communicated by 

 Dr Goring, ..... ■"•* 



VIII. On the Perfection of Microscopes. By Leonard Eui.er. Com- 

 municated by Dr Goring, . • • - :i3 

 IX. Remarks on Mons. Chevalier's Paper, and on the Memoir of Euler. 



By Dr Goring. Communicated by the Author, . 238 



X. On some properties in Achromatic Object-Glasses applicable to the 

 improvement of the .Microscope. By Joseph Jackson Lister, 

 Esq. (Concluded from No. ix. page 180.) . . 249 



