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CONTENTS. 



Art. L Meteorologital Observations during a Residence in Co 



lombia, between the Years 1820 and 1830; by Col 

 Richard Wright, ...... 



II. Remarks on the Trilobite ; by Prof. Green, M, D., 

 III. Description of a New Trilobite ; by Prof. Jacob Green 



M. D 



IV. On the Natural History of Volcanos and Earthquakes 



by Prof. Gustav Bischof, 



V. Reply of Dr. Daubeny to Prof. Bischof 's Objections 



to the Chemical Theories of Volcanos, - 

 VL Mountains in New York; by E. F. Johnson, 

 VII. Account of a Tornado ; by "VVillis Gaylord, '" ' • , 

 VIII. On Meteoric Stones — Erom the Annual Account of the 



Progress of Physics and Chemistry; by Berzelius, 

 IX* Terrestrial Magnetism ; by J. Hamilton, 

 X. Explosion of Hydrogen and Oxygen, with Remarks on 



XI. On the Greek Conjugations ; by Prof. J: W. Gibbs, 

 XII. Notice of Prof. Ehrenberg's Discoveries in relation to 



Eossil Animalcules ; also Notices of Deceased Mem- 

 bers of the Geological Society of London, being ex- 

 tracts from the Address of Rev. William Whewell, 



B. D- F» R. S,, .•-.... 



XIII. Account of a Meteor seen in Connecticut, December 



14, 1837; with some considerations on the Meteo- 

 4 rite which exploded near Weston, Dec. 14, 1S07; 



% 



By Edward C. Herrick, ..... 



XIV. Some Notice of British Naturalists; by Rev. Charles 



Vage. 



1 



25 



40 



41 



78 

 84 . 



90 



93 

 100 



Hemraing's Safety Tube ; by Prof. J. W. Webster, 104 



113 



116 



130 



Fox, 



136 



MISCELLANIES 



1. Pictorial delineations by light; solar, lunar, stellar, and arti- 



ficial, called Photogenic and the art Photography, . 



2. Correction of an Error— Cinnabar not found in Michigan, 



169 

 185 



