CONTENTS. lii 



Art. XIX. A New Theory of Galvanism, supported by 

 some Experiments and Observations made by 

 means of the Calorimotor, a new Galvanic 

 Instrument. Read before the Academy of 

 Natural Sciences, Philadelphia, by Robert 

 Hare, M. D. Professor of Chemistry in the 

 Medical Department of the University of 

 Pennsylvania, and Member of various Learned 

 Societies 413 



MATHEMATICS. 



Art. XX. An improved Method of obtaining the Formulae 

 for the Sines and Cosines of the Sum and Dif- 

 ference of two Arcs, by Professor Strong, of 

 Hamilton College, &c 42il 



MISCELLANEOUS. 



Art. XXI. An Account of several Ancient Mounds, and of 

 two Caves, in East Tennessee, by Mr. John 

 Henry Kain, of Knoxville 428 



Art. XXII. Facts illustrative of the Powers and Opera- 

 tions of the Human Mind in a Diseased State. 431 



INTELLIGENCE. 



Art. XXIII. 1 . Discovery of American Cinnabar and 



Native Lead 43'} 



2. Theoretical Views of Professor Hare of Philadel- 



phia 434 



3. New Work on Chemistry ibid. 



4. Botanical 435 



5. Staurotide ibid. 



a. Supplement to the " Remarks on the Geology and 



Mineralogy of a Section of Massachusetts, on 

 Connecticut River, &c." contained in No. 2, 

 Art. I, of this Journal, by E. Hitchcock, A. M. APfi 



