eee re 
a 
aR ry 
XII. 
XIV. 
CONTENTS. 
. Meteorological Observations during a Residence in Co- 
lombia, between the Years 1820 and 1830; by Col. 
Richard Wright, 
- Remarks on the Trilobite; by Prof, tt M. D. 9 
. Description of a New Trilobite ; by Prof. Jacob pe 
. On the Natural History of Voleanos and Barinquakes; 
by Prof. Gustav Bischof, 
Reply of Dr. Daubeny to Prof, Bischof *s jection 
to the Chemical Theories of Volcanos, . 
. Mountains in New York; by E. F. Johnson, 
. Account of a Tornado; by Willis Gaylord, 
- On Meteoric Stones—From the Annual Account of the 
Progress of Physics and Chemistry ; by Berzelius, 
- Terrestrial Magnetism; by J. Hamilton, ‘. : 
. Explosion of Hydrogen and Oxygen, with hesarks on 
Hemming’s Safety Tube; by Prof. J. W. Webster, 
. On the Greek Conjugations ; by Prof. J. W. Gibbs, 
- Notice of Prof. Ehrenberg’s Discoveries in relation to 
Fossil Animalcules ; also Notices of Deceased Mem- 
bers of the Geological Society of London, being ex- 
tracts from the Address of Rev. William Whewell, 
S., 
Account of a Meteor seen in Commertinel Sentiiheas 
14, 1837; with some considerations on the Meieo- 
rite which exploded near Weston, Dec. 14, 1807; 
By Edward C. Herrick, 
Some Notice of British Naturalists ; by Rev. Charles 
Fox, 
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, 
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