augmented by the voyages of the previously-mentioned John Byron (1764�1765), Samuel Wallis (1766, in the same HMS Dolphin which Byron had earlier sailed in) and Louis Antoine de Bougainville (1766). Thomas Falkner, a Jesuit who resided near forty years in those parts, published his Description of Patagonia (Hereford, 1774); Francisco Viedma founded El Carmen, nowadays Carmen de Patagones and Antonio settled the area of San Julian Bay, where he founded the colony of Floridablanca and advanced inland to the Andes (1782). Basilio Villarino ascended the Rio Negro (1782).
Two hydrographic surveys of the coasts were of first-rate importance: the first expedition (1826�1830) including HMS Adventure and HMS Beagle under Phillip Parker King, and the second (1832�1836) being the voyage of the Beagle under Robert FitzRoy. The latter expedition is particularly noted for the participation of Charles Darwin who spent considerable time investigating various areas of Patagonia onshore, including long rides with gauchos in R�o Negro, and who joined FitzRoy in a 200 miles (320 kilometres) expedition taking ships boats up the course of the Santa Cruz river.
Chilean and Argentine expansion (1843�1902)
Or�lie-Antoine de TounensIn the early 19th century the araucanization of the natives of northern Patagonia intensified and a lot of Mapuches migrated to Patagonia to live as nomads raising cattle or pillaging the Argentine countryside. The cattle stolen in the incursions (malones) would later be taken to Chile through the mountain passes and traded for goods, especially alcoholic beverages. The main trail for this trade was called Camino de los chilenos and run a length of about 1000 km from the Buenos Aires Province to the mountain passes of Neuqu�n Province. The lonco Calfucur� crossed the Andes from Chile to the Pampas around 1830 after a call from the governor of Buenos Aires, Juan Manuel de Rosas, to fight the Boroanos tribe. In 1859 he attacked Bah�a
