I. AN Account of the Language of Signs, among certain North
American Indians. By William Dunbar, Esq. of Nat-
chez on the Mississippi; Member of the Society: communi-
cated by Thomas Jefferson, President of the Society.
II. Meteorological Observations for one entire Year, ending the
31st of January 1800, made by William Dunbar, Esq.
at the Forest, 41 miles East of the Mississippi, in Lat. 31o
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.
III. Description of a singular Phenomenon seen at Baton
Rouge, by William Dunbar Esq. Communicated by the
President of the Society.
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.
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 from New-
Orleans to Philadelphia.
VI. An improved Method of projecting and measuring plane
Angles By R. Patterson. Communicated by Andrew
Ellicott Esq.