PROVINCE OF MATTO GROSSO. 



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Chaynez ; and the central, Doirados. The names of the lakes are Oberaba, 

 Gahiba, and Mandiore. The first on the north is ten miles in diameter, and 

 its outlet contiguous to the extremity of the serra Insua, behind which it com- 

 municates with the Gahiba lake, which is a little larger and ten miles distant 

 to the south, with its outlet, the same number of miles below the first, dividing 

 the serra of Insua from that of Doirados. 



The Mandiore lake is fifteen miles in extent, and has more than one channel 

 to the Paraguay, the northernmost of which separates the serra of Doirados 

 from that of Chaynez, and is twenty miles south of Gahiba, in front of which 

 the river St. Lourenqo discharges its abundant waters, in the latitude of 18° 45'. 



The serra of Chaynez, inhabited at times by the Guanan Indians, is followed 

 by that of Albuquerque, which is a square mass of an elevated range from 

 thirty-five to forty miles. On its southern side is situated the prezidio from 

 which its name is derived. In front of this serra is the principal embouchure 

 of the Tocoary in 19° 15'. 



Eighteen miles further to the south are the mouths of the Mondego. The 

 Paraguay flows in these parts divided into two channels, formed by a narrow 

 island seventy miles long; the eastern channel is denominated Paraguay Mirim. 



Thirty-five miles to the south of the Mondego are two high mounts, one 

 in front of the other, upon the margins of the Paraguay. Upon the southern 

 skirt of the western mount is situated the before-mentioned fort of Nova 

 Coimbra. 



Thirty-five miles below Coimbra, on the same margin, is the mouth of the 

 outlet from Bahia Negra, (Black Bay,) which is twenty miles inland, and com- 

 prises eighteen in length from north to south, being the receptacle of the lakes, 

 and of the aqueous eflfusions of the plains lying to the west and south of the 

 Albuquerque mountains. Sixty miles further the Paraguay receives on the 

 eastern bank the Queyma, which is said to be the Terrery of the first cer- 

 tanistas. 



Eight miles lower, in the latitude of 21°, upon the western margin, is the 

 morro which the ancient Paulistas called the Mount of Miguel Joze, upon 

 whose skirt is situated Fort Bourbon. Twenty-five miles by water, to the south 

 of the mount of Miguel Joze, in the latitude 21° 20', a chain of small mountains 

 prolong themselves with the Paraguay, where its waters are contracted into a 

 narrower space, flowing rapidly in two channels, separated by a rocky island 

 of considerable length. In this situation, denominated the Fecho dos Morros, 

 (the Barricado of Rocks,) and which is the limit between the High and Low 



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