I have spoken the more fully on this subject, in order to show you that successful navigation in this river depends not upon skill alone, but upon great good-fortune. Should a violent south wind arise, skill, knowledge, and experience all of no avail, the ship will be driven into places where it will either perish, or at least undergo much danger. In the year 1766, the very best skiff in the port of Buenos-Ayres, commanded by the most excellent captains in that city, being dashed against a shoal by the force of a stormy south wind, had its keel split like a nut, was divided into two parts, and utterly perished, ten Jesuits destined for the province of Chili, many Spanish grenadiers, and all the rest of the crew being drowned, except one captain of the grenadiers, who, with a boy of ten years old, seized hold, by chance, of a little boat, and arrived in safety at the opposite shore, at full ten miles distance from the place of the shipwreck. Not a single person offered to accuse the pilot of stupidity, or want of skill. Every one was aware that the foul tempest which had arisen in the night alone occasioned the shipwreck. For it appears from nautical tables and documents, that the north channel of the river is narrower and deeper, and the south channel, on the contrary, wider but of a shallower bottom. All knew whereabouts El Banco Inglez and El Banco Ortiz, with the other well-known rocks, lay concealed. But who could even guess at these new shoals, fresh heaps of sand, which either the river with its inundations, or the sea rushing impetuously into the river, were wont to heap up? By continually making use of the sounding-line, these later shoals are indeed discovered, but often when it is too late, the waves baffling all art and industry. Wherefore the wider this river extends on each side, and the nearer it approaches to the sea, so much the more is it to be dreaded. In this one channel the river La Plata flows between the promontories of Sta. Maria and S. Antonio, which latter is also called Cabo Blanco. The priest Cyriaco Morelli speaks thus concerning the mouth of the river La Plata, in his work intituled _Fasti Novi Orbis_, "What we call the river La Plata, is in reality an immense bay of the sea, into which the waters of the Parana, the Paraguay, and the Uruguay flow." Different authors give different accounts of the width of this river where it enters the sea. Many Spaniards at this day give it sixty leagues, others fewer, and some say it is seventy leagues across. But Egidio Gonzalez de Avila, in the "_Ecclesiastical Theatre of the Indies_," vol. ii. affirms that the river La Plata enters the sea by mouths eighty leagues in width. I leave you to form your own opinion on the subject.