CONTENTS TO VOLUME XV. 



NUMBER I. 



Page. 

 Art. I. On the Muriate of Soda, and the Salt Spring's in the 

 United States ; by George W. Carpenter, of Phil- 

 adelphia, _ _ _ - 1 

 II. Notice of the Salt Springs and Manufacture of Salt 

 at Salina, Syracuse, &c. N. Y. ; by Stephen Smith, 

 Superintendent at Salina, _ _ 6 



III. Hypothesis on Volcanos and Earthquakes ; by Jo- 



seph Du CoMMuiv, of the Military Academy at 

 West-Point, - - - - 12 



IV. Descriptive Arrangement of Volcanic Rocks ; by 



G. Poulett Scrope, Esq., M. G. S. ; from the 

 London Quarterly Journal of Science, &.c. for 

 July, 1826, ... - 28 



V. The Report of J. L. Tiarks, Astronomer, &c. on his 

 Observations for ascertaining the most north- 

 western point of the Lake of the Woods, 41 

 VI. On the Vitality of Matter, - - . 54 

 VII. On the Zodiacal Light ; by David Leslie, - 62 

 VIII. Remarks upon Bleaching-, _ _ _ 64 

 IX. Biographical Notice of Alexander Volta, - 67 

 X. Double Stars, and the Order of the Starry Firma- 

 ment, _____ 76 

 XI. Account of the Tracks of Foot-Marks of Animals 

 found impressed in Sandstone in the Quarry of 

 Corncockle Muir, Dumfries-shire ; by the Rev. 

 Henrv Duncan, D. D. Minister at Ruthwell. From 

 Dr. Brewster's Journal, _ _ _ 84 

 XII. Observations concerning Fossil Organic Remains; 

 by J. E. DooRNiK, M D. &;c. Communicated for 

 this Journal, by the author, in French MS. and 

 translated by Charles U. Sheparl. — Remarks up- 

 on M. Cuvier's Method of explaining the import- 

 ance of Organic Remains in Geoiogy, - 90 

 XIII. Analysis of an " Essai sur la temperature de I'inte- 

 rieur de la Terre, par M. Cordier;" With obser- 

 vations; by Thomas Cooper, M. D. &c., President 

 of the Colles-e of South Carolina, - 109 



17/107 



