Among the thirty-four million inhabitants spread over the vast surface of continental America, in which estimate are comprised the savage natives, we distinguish, according to the three preponderant races, sixteen millions and a half in the possessions of the Spanish Americans, ten millions in those of the Anglo-Americans, and nearly four millions in those of the Portuguese Americans. The population of these three great divisions is, at the present time, in the proportion of 4, 2 1/2, 1; while the extent of surface over which the population is spread is, as the numbers 1.5, 0.7, 1. The area of the United States* is nearly one-fourth greater than that of Russia west of the Ural mountains; and Spanish America is in the same proportion more extensive than the whole of Europe. (* Notwithstanding the political changes which have taken place in the South American colonies, I shall throughout this work designate the country inhabited by the Spanish Americans by the denomination of Spanish America. I call the country of the Anglo-Americans the United States, without adding of North America, although other United States exist in South America. It is embarrassing to speak of nations who play a great part on the scene of the world without having collective names. The term American can no longer be applied solely to the citizens of the United States of North America; and it were to be wished that the nomenclature of the independent nations of the New Continent should be fixed in a manner at once convenient, harmonious, and precise.) The United States contain five-eighths of the proportion of the Spanish possessions, and yet their area is not one-half so large. Brazil comprehends tracts of country so desert toward the west that over an extent only a third less than that of Spanish America its population is in the proportion of one to four. The following table contains the results of an attempt which I made, conjointly with M. Mathieu, member of the Academy of Sciences, and of the Bureau des Longitudes, to estimate with precision the extent of the surface of the various states of America. We made use of maps on which the limits had been corrected according to the statements published in my Recueil d'Observations Astronomiques. Our scales were, generally speaking, so large that spaces from four to five leagues square were not omitted. We observed this degree of precision that we might not add the uncertainty of the measure of triangles, trapeziums, and the sinuosities of the coasts, to the uncertainty of geographical statements. TABLE OF GREAT POLITICAL DIVISIONS. COLUMN 1 : NAME. COLUMN 2 : SURFACE IN SQUARE LEAGUES OF 20 TO AN EQUINOCTIAL DEGREE. COLUMN 3 : POPULATION (1823). Surface Pop. 1. Possessions of the Spanish Americans : 371,380 : 16,785,000.