CONTENTS TO VOLUME XVI. 



NUMBER I. 



Page. 

 Ar*. I Prof. E. Mitchell, on the Geology of the Gold Re- 

 gion of North Carolina, - - - 1 

 II. Examination of a substance called Shooting Star ; 

 by Counsellor Dr. Brandes, of Salzutien. (Trans- 

 lated from the German,) - - - 20 



III, Observations and Experiments on Peruvian Bark ; 



by George W. Carpenter, of Philadelphia, 28 



IV. Observations on a New preparation of Balsam Co- 



paiva ; by George W. Carpenter, of Philadel- 

 phia, - - - - - 40 

 V. Notice of the appearance of Fish and Lizards in ex- 

 traordinary circumstances ; by Joseph E. Muse, 

 M. D. - - - - - 41 

 VI. Meteorological Observations ; by S. P. Hildreth, 



M. D. - - - - -44 



VII. Calendar of Vegetation ; bj;^ A. W. Bowen, 48 



VIII. Strictures on the Hypothesis of Mr. Joseph Du 

 Commun, on Volcanos and Earthquakes ; by 

 Benjamin Bell, - - - - 51 



IX. A Discourse on the different views that have been 

 taken of the Theory of Fluxions ; by Elizur . 

 Wright, - - - - - 53 



X. Variation of the Magnetic Needle, - - 60 



XI. Prof Olmsted's Meteorological Report for the year 



1828, ----- 70 



XII. On the variations of level in the great North Amer- 

 ican Lakes ; by Gen. H. A. S. Dearborn, 78 



XIII. On the observations of Comets ; by P. J, Rodriguez, 94 



XIV. On the Effect of the Physical Geography of the 



World on the Boundaries of Empires ; by John 

 Finch, F. B. S., M. S. D. &c. &c. - - 99 



XV. On the Manufacture of Glass ; by Horatio N. Fenn, 



M. D. - - - - - 112 



XVI. Polar Explorations, - - - 124 



XVIL Motion, the Natural State of Matter, - - 151 



XVIII. Facts relating to Ohio and Mexico, - 154 



