_First Explorers--Gold discovered--Two Brothers appointed for the purpose of exacting the Fifths on Gold--Their atrocious Conduct--People attracted here by the Fame of Gold--Destruction of a Party by the Indians--Payagoa and Guaycuru Nations discovered--Their Alliance--Their fatal Attacks upon the Portuguese--Their Disunion--Continued Hostilities of the Guaycurus--Conflicts with them--Attempts to make Peace with the Indians--Treachery of the Guaycurus--Severe Drought--Arrival of a Governor--Promotes the Navigation to Para--Extent and Boundaries.--Division into Districts--District of Camapuania--Mineralogy--Phytology--Rivers--Zoology--Various Indian Tribes--Povoações.--District of Matto Grosso--Mountains --Mineralogy--Phytology--Zoology--Rivers--Capital.--District of Cuiaba--Mineralogy--Phytology--Zoology--Rivers--Povoações --Indians.--District of Bororonia--Indians--Rivers--Lakes.-- District of Juruenna--Indians--Rivers--Forts.--District of Arinos--Indians--Rivers.--District of Tappiraquia--Indians-- Rivers.--Lands of these Districts fertile and auriferous._ The Vincentistas having reduced the Guanhana, and Carijo nations, they began to make incursions beyond the Paranna, in pursuit of other Indians equally pusillanimous, and less numerous. Aleixo Garcia and his brother or son, accompanied by a numerous band of domestic Indians, having passed the Paraguay, and penetrated to the proximity of the Andes in the middle of the sixteenth century, were the first known discoverers of the southern part of this vast province; and Manuel Correa, a Paulista (as well as the others) having passed the Araguaya, a considerable time afterwards, penetrated to its northern part.