A. The Tableland.
Apart from Villarino's journey on the Rio Negro in the eighteenth century, the first journey across the Patagonian tableland is that of G. Chaworth Musters, At Home with the Patagonians (London, 1871).
In the early volumes of the Bol. Inst. Geog. Argent. will be found the results of various explorations between 1878 and 1885 by Argentine travellers.
With this group of documents, which provided the first material for his conclusions, we may associate the geological studies of Florentino Ameghino, "L'âge des formations sédimentaires de Patagonie" (An. Soc. Cient. Argentina, l, 1900, pp. 109-130, 145-160, and 209-229; li, 1901, pp. 20-39 and 65-90; lii, 1901, pp. 189-197 and 244-250; liii, 1902, pp. 161-181, 220-249 and 282-342) and "Les formations sédimentaires du crétacé supérieur et du tertiaire en Patagonie" (An. Mus. Nac. Buenos Aires, series ii, vol. viii, 1906, pp. 1-568).
On the southern part of Patagonia, south of 50° S. lat.:—
Svenska Expeditionen till Magellanslaenderna (Wissenschaftliche Ergebnisse der Schwedischen Expedition nach den Magellans Laendern, 1895-1897, unter Leitung von Dr. Otto Nordenskjoeld, Band I, Geologie, Geographie und Anthropologie, Stockholm, 1907).
On the Magellan region and that of the Santa Cruz:—
Reports of the Princeton University Expeditions to Patagonia, 1896-9, i, J. B. Hatcher, Narrative of the Expeditions, Geography of Southern Patagonia (Princeton and Stuttgart, 1903).
On the Rio Negro district:—
S. Roth, "Apuntes sobre la Geologia y la Paleontologia de las Territorios del Rio Negro y Neuquen" (Rev. Mus. Plata, ix, 1899, pp. 141-196).