CONTENTS OF VOLUME XXIX 



NUMBER I. 



Art. I. Observations on the Bituminous Coal Deposits of the valley of the 



Ohio, and the accompanying rock strata; with notices of the fossil or- 

 ganic remains, and the relics of vegetable and animal bodies, illustra- 

 ted by a geological map, by numerous drawings of plants and shells, 

 and by views of interesting scenery; by Dn S. P. Hildukth, of Ma- 

 rietta. Ohio, .--.---- 



1 



MISCELLANIES. 



1. Halley's Comet, -----•. 155 



2. Coins and medals, ------- 157 



3. List of new j)ublications since the commencement of the present year, 161 



4. Facts respecting the meteoric phenomena of Nov. 13lh, 1834, - 168 



NUMBER II. 



Art. I. Remarks on the Geology of the Lakes and the Valley of the Missis- 

 sippi; by Judge Gibson, of Pennsylvania, - - _ 201 



II. Fata Morgana at Gibraltar; by an officer in the American Navy, 214 

 IIL Visit to the Q.uicksilver Mines of Idria ; in a letter from an officer in 



the American Navy, ------ 219 



IV. The Traun Stein Rock; in a letter from an officer in the U. S. Navy, 223 

 V. The Salt Mountains of Ischil; by an officer in the American Navy, 225 



VI. Remarks on the Topography, Scenery, Geology, &c. of the vicinity of 

 the Cape of Good Hope j by Mr. George ChampioKj a Missionary in 

 Southern Africa, ------- 230 



VIL Physical Observations, made on board the U. S. ship Erie, during her 



passage from New York to Rio Janeiro, in 1834, and communicated 

 to the Navy Department; by D, J. Bhowne, - - - 237 



VIIL On the Deutarseniuret of Nickel, from Riechelsdorf, in Hessia; by 



James C. Booth, - - - - ^ _ . 241 



IX. Explosive Reaction of Hydrogen with Chlorine, under the influence 



of the solar ra3's; by R. Hare, M. D. Prof, of Chem. in Univ. Penn. 243 

 X, Apparatus for the Evolution of Cyanhydric or Prussic Acid; by R. 



Hahk, M. D. Prof of Chemistry in the University of Pennsylvania, 244 

 XI. Caricography; by Prof. C. Dewey, - - - - 245 



XII. On Water Spouts; by Lieut. H. W. Ogdex, of the U. S. Navy, 254 



XIII. Researches on the Commercial Potash of the Slate of New York; by 



Prof. Lewis C Beck, M. D. - - - - - 260 



XIV- Remarks on the theory of the Resistance of Fluids; by Em W. Blake, 274 

 XV. A Letter on Otaheite ; addressed to B.L. Oliver, Esq. of Boston, and 



by him translated, - - - - - . - 283 



XVI. Notice of some American Birds; by Charles Fox, of Durham, (Eng.) 291 



XVII. Meteorological notices in Indiana; by D. Dale Owen, - * 294 



XVIII. Chronometers, _.----- 397 



XIX. Notices in Natural History; by Judge Samuel Woodruff, - 304 



. Ornithichnology. — Description of the Foot Marks of Birds, (Orni- 

 thichnites,) on new Red Sandstone, in Massachusetts j by Prof. Ed- 

 ward Hitchcock, ------- 307 



XXI. On Currents in Water; by Alan W. Carson, . - , 340 



XXII. Ofthe Parallelogram of Forces; by Prof. Theodore Strong, - 345 



