. CONTENTS, 
GEOLOGY, MINERALOGY, TOPOGRAPHY, &c. 
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Art. I. Notices of the Geology and Mineralogy of.Sicily, from a work 
entitled ‘‘Storia Naturale della Sicilia. Catania, 1813 ; del Ab. 
F. Ferrara.” Translated and condensed by J.G. Percival, 201 
IJ. Analysis of M. A. Brongniart’s Viemoir, ‘‘Sur les caracteres _ 
Zoologiques des Formations,” &c.; by J. G.Percival, — 213 
III. Notice of the Malleable Iron of Louisiana, = ligne wees 218 
_ IV. Notice of Miscellaneous Localities of Minerals, - - = 226 
V. Geology of the country near Easton, Penn. ; by J. Finch, - 236 
VI. Geology ofa part of Massachusetts, &c.; by Prof.C. Dewey, 240 
VII. Notice ofa singular Conglomerate, and of an interesting locali- ; 
ty of Trap Tuffor Tufa, - © - - ep ee 244 
VIII. Notice of the Ancram Lead Mine ; by €. A. Lee, - - 
- TX. Notice of the Granitic veins and beds in Chester, Mass.; by 
KE. Emmons, 9 - = 
X. Geology and Mineralogy of Salisbury, Conn.; by C. A. Lee, ~— 252 
XI. Ought American Geologists to'adopt the changes in the aci- 
ence, proposed by Phillips and Conybeare ? - - 
BOTANY. | 4 
XII. Caricog aphy ; (continued from p. 99;) by Prof.C. Dewey, 264 
XIII. List of the Rarer Plants found near Easton, Penn.; bythe Rev. 
er L. De Schweinitz, ba SS i = = - 2. = 267 
ENTOMOLOGY. (7 Gy 
XIV. Notice of the Melolontha,or May Bug; by Jacob Cist, - 269 
“MECHANICS, PHYSICS, CHEMISTRY, AND THE ARTS. 
XV. Deieripion of two new Voltaic Batteries; by Prof. De Butts, © 271 
XVI. Remarks on Mr. Patten’s Air Pump; by Prof. J. F. Dana, 275 
XVII. On the Heat produced by Friction; by J. T. Watson, - 216 
XVIII. On the stopping of Astronomical Clocks ; by Prof. W. Howard, 277 
_ —XIX. Reply to Mr. Quinby on Crank Motion, pig Gr 279 
_ XX. On the formation of Crystals in Geodes, - - = - 932° 
_ XXI, Remarks respecting Mr. Vanuxem’s Memoir ; by Prof. R. Hare, 288 
XXII. Notice of illuminating Gas from Cotton Seed ; by Prof. D. Olm- 
oy sted, - - = Btey oialeera = 294 | 
XXIII. Analysis of an Hydrate of Iron; by H.Seybert, -  - 298: 
XXIV. Analysis of the Melanite, from Sussex Co. N.J.; by H. Seybert, 300 
“XXV. Remarks on Tests for Cobalt ; by Prof. J. F. Dana, . 301 
XXVI. Notice of the manufacture of the Alkaline Salts of Commerce; - °$ 
____. by Dr. G. A. Rogers, . Pe RS 8 Rap Ste Es le “304 
XXVI. Meteorological Notice; by MartinField, © - - -: 306 
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