or districts, into which those States are divided; and it likewise rectifies many local errors, both in the Central and Northern Provinces; Colonel Bourne, a gentleman recently returned from Sonora and Cinaloa, having been so obliging as to furnish me with a great deal of valuable statistical information respecting those States.
In the Map of Routes, attached to the Second Volume, I have to express my obligations to Mr. Beaufoy, for the assistance, which he has afforded me, by furnishing me with a copy of his routes in the vicinity of the Capital, and from thence to Tampico and Veracruz. With the exception of the expedition to the South of Valladolid, we both passed over the same ground; but it will be seen that in my journey North, where I had nothing but my own remarks to guide me, I have been unable to enter into as many details as in my visits to the Central districts of Tlalpujahua, Temascaltepec, and Real del Monte, where I had the benefit of Mr. Beaufoy's observations in addition to my own.
The distances are estimated in general by the reputed number of leagues, and time, combined.
The rivers are merely laid down where they in-
