CONTENTS 

 OF VOLUME VI.— PART I. 



No. 



1'age. 



I. AN Account of the Language of Signs, among certain Nort '/ k 

 American Indians. By William Dunbar, Esq. of Nat- 

 chez on the Mississippi; Member of tlie Society : communi- 

 cated by Thomas Jefferson, President of the Society. I 



II. Meteorological Observations for one entire Year, ending the 

 31st of January 1800, made by William Dunbar, Esq. 

 at the Forest, 44. miles East of the Mississippi, in Lat. 31° 

 28' N. and Long. 91° 30' W. of Greenwich; on an 

 Eminence about 150 Feet above the Level of the highest Wa- 

 ters of the annual Inundation of the Mississippi. Commu- 

 nicated by the President of the Society. 9 



III. Description of a singular Phenomenon seen at Baton 

 Rouge, by William Dunbar Esq. Communicated by the 

 President of the Society, 25 



IV. A short and easy Rule for finding the Equation for the 

 Change of Sun's Declination, when equal Altitudes are used 

 to regulate a Clock or other Time-Keeper. By Andrew 

 Ellicott, Esq. Communicated by the Author* 26 



V. Account of an extraordinary Flight of Meteors (commonly 

 called shooting Stars). Communicated by Andrew Ellicott 

 Esq. as extracted from his Journal, in a Voyage J rom New- 

 Orleans to Philadelphia. 0$ 



VI. An improved Method of projecting and measuring plane 

 Angles. By R. Patterson. Communicated by Andrew 

 Ellicott Esq. 29 



VII. Sur la TMorie des Vents. Par M. Dupont de Nemours. 32 



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