CONTENTS. iii 



' Ptfe 



ville, Ohio ; in Letters addressed to His Ex- 

 cellency De Witt Clinton, LL.D. Governor 

 of the State of New- York, and President of 

 the Literary and Philosophical Society. 276 



Art. XIII. On a singular Disruption of the Ground, ap- 

 parently by Frost, in Letters from Edward 

 Hitchcock, A. M. late Principal of Deerfield 

 Academy 286 



Art. XIV. On a New Form of the Electrical Battery, 

 by J. F. Dana, M. D. Chemical Assistant in 

 Harvard University, and Lecturer on Che- 

 mistry and Pharmacy in Dartmouth College. 292 



Art. XV. Chemical Examination of the Berries of the 

 Myrica Cerifera, or Wax Myrtle, by J. F. 

 Dana, M. D. Chemical Assistant in Harvard 

 University, and Lecturer on Chemistry and 

 Pharmacy in Dartmouth College 294 



Art. XVL Analysis of Wacke, by Dr. J. W. Webster, of 



Boston. . . . • 296 



AGRICULTURE AND ECONOMICS. 



Art. XVII. On the Comparative Quantity of Nutritious 

 Matter which may be obtained from an Acre 

 of Land when cultivated with Potatoes or 

 Wheat, by Dr. Eli Ives, Professor of Materia 

 Medica and Botany in Yale College. . . . 297 



MISCELLANEOUS. 



Art. XVIII. Biographical Notice of the lat€ Archibald 

 Bruce, M. D. Professor of Materia Medica 

 and Mineralogy in the Medical Institution of 

 the State of New- York, and Queen's College, 

 New-Jersey ; and Member of various Learn- 

 ed Societies in America and Europe, . . . 299 



