373 



Apalachicoia, 599,, 123 square miles. Mr. Gallatin had 

 well estimated that surface at more than 580,000 square 

 miles. If the partial value of the two sections * and 0 are 

 affected by the uncertainty of a line of demarcation pass- 

 ing by one of the numerous chains of the Alleghanies, the 

 total value of os -j- |S remains less doubtful, because it de- 

 pends only on the position of the coast of the Atlantic, 

 that of the lakes, and the course of the Mississippi. The 

 divisions of the United States into two great sections, on 

 the east and west of the Mississipi, is, from its very na- 

 ture, the most exact of all j and the maps which we pos- 

 sess at present, disagree only on account of the uncer- 

 tain form of the peninsula of Florida, and the want of an 

 accurate representation of the coast of Georgia, of Alaba- 

 ma, and of the territory of the Mississipi. Mr. Gallatin 

 finds for the value of a -f comprehending Florida, 

 958,000 square miles j Mr. Warden, 909,000 ; Mr. 

 Melish, 952,000. I have fixed on 930,000 square miles, 

 or 77,700 square marine leagues ; but Mr. Brue's map, 

 for which several astronomic positions were employed, 

 gives 972,000 square miles. All these calculations of 

 the area prove, that the limits of the errors are in the ac- 

 tual state of the geography of America, between one twen- 

 ty-sixth and one thirty-fifth. The errors even in Europe 

 amount in many countries, to one-fortieth, (dntillon, 

 Geogr.p. 143). 



y) Between the Mississipi and the Rocky Mountains : 868,4()0 

 square miles, or 72,531 square leagues, As many doubts 

 have been recently thrown out respecting the area of the 

 territory of the Missouri, I have again made the calcula- 

 tion on a great number of maps ; of which the result for the 

 part of that territory between the Mississipi and the Rocky 

 Mountains, comprehending the state of Missouri, is 

 693,862 j 680,806 j 692,277 ; 696,277 square miles. Mr. 



