CONTENTS. 



PAGE 



Art. I. Account of the Observations which have revealed 

 to us the Physical Constitution of the Sun, and 

 that of different stars : Examination* of the 

 Conjectures of the Ancient Philosophers ; and 

 of the Positive Data of Modern Astronomers, 

 concerning the Place in which the Sun should 

 be considered among the vast number of Stars 

 with which the Firmament is strewed. By M. 

 Arago, ...... 193 



II. Opening of the Government School of Mines ; and 



of Science as applied to the Arts, . 210 



III, On Coral Reefs and Islands. By James D. 

 Dana. (Continued from page 62) : — 



1. Formation of Coral Reefs, . . 221 



IV. On the Filaria in the Blood of the Domestic Dog. 



By MM. Gruby and 0. Delafond, . 233 



V. Description of a Self- Acting Apparatus for pre- 

 venting Water-Pipes Bursting during Frost. 

 By Mr Alexander Macpherson, F.R.S.S.A., 

 of Leith. (Communicated by the Author.) 

 With a Plate, 238 



VI. Climate and Mortality of Glasgow, 1851. By 

 Robert Dundas Thomson, F.R.S.E., Lecturer 

 on Chemistry in the University of Glasgow, 243 



VII. On. Fossil Footprints. By Robert Harkness, 



Esq. (Communicated by the Author,) . 246 



