i6z ASTRONOMICAL and 



No. XX. 



Philadelphia, Auguft 4th, 1800. 

 Dear Sir, 



Read Aug. T X T ITH this you will receive my aftrono- 

 15,180c. VV mical, and thermometrical obfervations, 

 made at the confluence of the Miffiffippi, and Ohio ri- 

 vers, in Dec. 1796, and Jan. 1797, at Natchez in the 

 years 1797 and 1798 — likewife at the city of New Or- 

 leans, in Jan. and Feb. 1799, to which are added the 

 obfervations on the tranfit of 9 made at Miller's planta- 

 tion on the Coenecuch, commonly, (though erroneoufly), 

 called the Efcambia. — The agronomical obfervations made 

 at the confluence of the Miififlippi, and Ohio rivers, the 

 equal altitudes of the fun at Natchez, with the obferva- 

 tions made at New Orleans, are entered according to the 

 civil account, for the purpofe of bringing the thermome- 

 trical obfervations into the journal, in the manner they 

 are generally regiftered. 



The obfervations made on the boundary between the 

 United States, and his Catholic Majelty, will conftitute a 

 feparate paper, and of very confiderable length, in which 

 the longitudes, of a number of points in the line are de- 

 termined, both by lunar obfervations, and the eclipfes of 

 "U's fatellites. This work, will probably be ready for the 

 fociety feme time the enfuing winter. 



Afironomicoly, 



