CONTENTS 



OF THE 



EDINBURGH JOURNAL OF SCIENCE. 



No. IX. 



Page 



Abt. I. Biographical Memoir of Mark Augustus Pictet, Professor of 

 Natural Philosophy at Geneva, Corresponding Member of the Institute of 

 France, and Fellow of the Royal Societies of London and Edinburgh, &c. I 



II. On the Polarisation of Sound, in a different manner from that describ- 

 ed by Mr Wheatstone. By W. Weber, . . 8 



III. On the History of the Experiments on the Magnetism exhibited by 

 Iron in Rotation. By Samuel Hunter Christie, Esq. M. A. of 

 Trinity College, Cambridge ; Fellow of the Cambridge Philosophical So- 

 ciety; of the Royal Military Academy. In a Letter to the Editor, 11 



IV. Observations on the size of the Teeth in Sharks, compared with the 

 Fossil Teeth of an animal analogous to the present Shark, and described 

 by Messrs Lacepede and Faujas St Fond, in the " Annales de Museum." 

 By Robert Knox, M. D. F. K. S. E. &c. Communicated by the Au- 

 thor, - ...... 16 



V. Results of the Thermometrical Observations made at Leith Fort, every 

 Hour of the Day and Night, during the whole of the Years 1824 and 

 1825. By David Brewster, LL. D. F.R.S. Lond. and Sec R. S. Ed. 

 Corresponding Member of the Academy of Sciences of Paris, &c. 18 



VI. Remarks on M. le Colonel Bory de St-Vincent's proposed Species of the 

 Genus Homo. By a Correspondent, .... 33 



VII. Remarks on Dr Knox's " Observations on the Habits of Hyaenas," con- 

 tained in the Fifth Number of the Edinburgh Journal of Science. By 

 W. H. Wayne, Esq. Fellow of the Cam. Phil. Soc. Communicated 



by the Author, - - 43 



VIII. Observations on the Changes which take place on Mercurial Thermome- 

 ters. By H. H. Blackadder, Esq. F. R. S- E. Communicated by the 

 Author, - - - - - - 47 



IX. On the Influence exerted by different Media on the number of Vibrations 

 of Solid Bodies. By M. Felix Savart, ... 48 



X. Account of a Singular Phenomenon in Vision. By Mr Thomas 

 Smith, Surgeon, Kingussie. In a Letter to the Editor, • 52 



XI. Description of the Great Temple of Carnac, in Thebes. By Major-Ge- 

 neral Straton, F. R. S. Edin. (With a Plate.) Communicated by the 

 Author, ..... B4j 



