CONTENTS 



OF THE 



EDINBURGH JOURNAL OF SCIENCE, 



No. IX. 



NEW SERIES. 



Page 

 Art. I. Observations on the Decline of Science in England, . 1 



II. Observations respecting Professor Leslie's Formula for the Decrease 

 of Heat in the Atmosphere; and his Opinions respecting the Polar 

 Temperature. By James D. Forbes, Esq. F. H. S. Ed. Com- 

 municated by the Author. . . • • 17 



III. Observations on the Meteor called the Aurora Borealis, with Calcula- 



tions, Trigonometrical and Analytical, towards determining the po- 

 sition and the course of the Arches, with respect to the surface of 

 the Earth. By R. Potter, Esq. Junior. Communicated by the 

 Author, . . • • . / 23 



IV. On the Respiratory Organs and Air-Bladder of certain Fishes of the 



Ganges. By J. Taylor, Esq. . . /. 33 



V. On the Question of the Existence of the Rein-Deer, during the Twelfth 

 Century, in Caithness. By S. Hibbert, M. D. V. R. S. Ed. &c. 

 &r. Communicated by the Author, . . 50 



VI. On Monochromatic Light, and on the Achromatism and Spherical 

 Aberration of Eye-pieces and Engyscopes. By Chahles Goring. 

 M. D. Communicated by the Author, . . 52 



VII. On the Specific Heats of some of the Metals, with an exposition of 

 some erroneous Determinations by MM. Dulong and Petit; and 

 an examination, as to the Metals, of the important law, that the 

 ultimate particles of simple bodies have all the same capacity for 

 Caloric. By It. Potter, Esq. Junior. Communicated by the 

 Author, . • 75 



VIII. Observations on a new mode of constructing Harbours. By Wil- 

 liam Matiieson, Civil-Engineer. Communicated by the Author, 83 



IX. On the Intensity of Light when the vibrations are elliptical. By 



James Maccullagii, Esq. Communicated by the Author, 86 



X. Extraordinary facts relating to the Vision of Colours : with Observa- 

 tions. By Mr John Dalton, 



XI. On the relation between the Refractive Powers and the polarizing 

 angles of singly refractive substances. By Dr A. Seebeck, 



88 

 99 



