I asked him if these notions of his were common among those of his country who were settled in Chili and Peru? or whether they were his own private opinions only? I told him I believed the latter, because I found he acted in all his affairs upon generous principles, and was for propagating the good of mankind; but, that I questioned whether their governor of Old Spain, or the sub-governor and viceroy of New Spain, acted upon those notions; and, since he had mentioned the Buenos Ayres and the Rio de la Plata, I should take that as an example, seeing the Spaniards would never suffer any nation to set foot in that great river, where so many countries might have been discovered, and colonies planted; though, at the same time, they had not possessed, or fully discovered those places themselves. He answered me, smiling; Seignior, says he, you have given the reason for this yourself, in that very part which you think is a reason against it. We have a colony at Buenos Ayres, and at the city of Ascension, higher up in the Rio de la Plata, and we are not willing to let any other nation settle there, because we would not let them see how weak we are, and what a vast extent of land we possess there with a few men; and this for two reasons: First, We are possessed of the country, and daily increasing there, and may in time extend ourselves farther. The great rivers Parana and Paraguay being yet left for us to plant in, and we are not willing to put ourselves out of a capacity of planting farther, and therefore we keep the possession. Secondly, We have a communication from thence with Peru. The great river la Plata rises at the city of that name, and out of the mountain Potosi, in Peru, and a great trade is carried on by that river, and it would be dangerous to let foreigners into the secret of that trade, which they might entirely cut off, especially when they should find how small a number of Spaniards are planted there to preserve it, seeing there are not six hundred Spaniards in all that vast country, which, by the course of that river, is more than one thousand six hundred miles in length. I confess, said I, these are just grounds for your keeping the possession of that river. They are so, said he, and the more because of so powerful a colony as the Portuguese have in the Brazils, which bound immediately upon it, and who are always encroaching upon it from the land side, and would gladly have a passage up the Rio Parana to the back of their colony.