CONTENTS 



OF THE 



EDINBURGH JOURNAL OF SCIENCE. 

 No. XVI. 



Page 

 Art. I. On the supposed Influence of the Aurora Borealis upon the Magnetic 

 Needle, in reply to the Observations of M. Arago, as communicated 

 to the Academy of Sciences on the 22d January 1828, '- 189 



II. On the Elasticity and Change of Volume of Metallic Strings while in 



a state of Vibration. By Baron Cagniard de la Tour, - 201 



III.* On the singular Effects of two Strokes of Lightning upon the vessel 

 called the New York, while sailing from London to New York. By 

 the Reverend William Scoresby. - - 203 



III. On the Cold Caves of the Monte Testaccio at Rome. By a Corres- 

 pondent, - - - . - - 205 



IV. Observations on the Formation of Ice in India, in a Letter from David 

 Scott, Esq. to George Swikton, Esq. Calcutta, - - 216 



V. Memoir on the Horary Oscillations of the Barometer at Rome. Com- 

 municated by the Author. (Continued from p. 129.) - 218 

 VI. Account of the Necropolis of Petra, a City in Palestine, excavated 

 from the solid Rock. By the Honourable Charles Leonard Irby 

 and James Mangles, Commanders in the Royal Navy, - 227 

 VII. Notice of the Principal Meteorological Phenomena in the last eight 

 months of 1826 at Patna and Futtehpore. By Alexander F. Lind, 

 Esq. of the Bengal Civil Service. Communicated by the Author, 246 

 VIII. On the Assay of the Argillaceous Iron-Ore. By Hugh Colqu- 



HOUN, M. D. Communicated by the Author, - - 250 



IX. On the Natural History and Properties of Tabasheer, the Siliceous 

 concretion in the Bamboo. By David Brewster, LL.D., F. R. S. 

 Lond., and Sec. R. S. Edin., - - - - 28* 



X. On a new Acid of Selenium. By M. E. Mitscherlich, Professor 

 of Chemistry in the University of Berlin, F. 11. S. Ed. &c. &c., 294 



XI . Summ ary for the year 1 827 of the state of the Barometer, Thermometer, 

 &c. in Kendal. By Mr Samuel Marshall. Communicated by the 

 Author, - - - . . - 299 



XII. Account of an extraordinary Marine Animal or Sea Serpent. By I. 

 Harwood, M. D. F. R. S. Professor of Natural History in the Royal 

 Institution, - - - - 300 



XIII. On the Mean Temperature, &c of various places in the State of New 

 York for 1826, * - - - 303 



XIV. Account of the Tracts or Foot-Marks of Animals found impressed in 

 Sandstone in the Quarry of Corncockle Muir, Dumfries-shire. By the 

 Reverend Henry Duncan, D. D. Minister at Ruthwell. Communi- ' 

 cated by the Author, - - - - 305 



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