The northern part of the Gran Chaco is partly wooded and swampy, and as the slope eastward is very gentle and the rivers much obstructed by sand bars, floating trees and vegetation, large areas are regularly flooded during rainy seasons.
The general elevation of the Chaco varies from 600 to 800 ft.
These Chaco rivers are obstructed by sand bars and snags, which could be removed only by an expenditure of money unwarranted by the present population and traffic. In the southern pampa.
The territories of the Gran Chaco, however, are covered with a characteristic tropical vegetation, in which the palm predominates, but intermingled south of the Bermejo with heavy growths of algarrobo, quebracho-colorado, urunday (Astronium fraxinifolium), lapacho (Tecoma curialis) and palosanto (Guayacum officinalis), all esteemed for hardness and fineness of grain.
In the " mesopotamia " region the flora is similar to that of the southern Chaco, but in the Misiones it approximates more to that of the neighbouring Brazilian highlands.
In the Chaco the tapir or anta (Tapir americanus) still finds a safe retreat, and the peccary (Dycotyles torquatus) ranges from Cordoba north to the Bolivian frontier.
Pelleschi's Eight Months on the Gran Chaco; R.
The vegetation is similar to that of Paraguay and the Chaco, and aquatic plants are specially numerous and luxuriant.
by Salta and the Chaco territory, E.
by the Chaco and Santa Fe, S.
Brazil; Caribian, around Caribbean Sea; Catamarenyan, Chaco; Changuinan, Panama; Charruan, Parana R.; Chibchan, Colombia .; Churbyan, Orinoco R.; Coconucan, Colombia; Cunan, Panama; Guaycuruan, Paraguay R.; Jivaroan, Ecuador; Kechuan, Peru; Laman, N.E.
del Fuego; Paniquitan, Colombia; Panoan, Ucayali R., Peru; Payaguan, Chaco; Puquinan, Titicaca L.; Samucan, Bolivia; Tacanan, N.
The city faces upon a curve in the river bank forming what is called the Bay of Asuncion, and is built on a low sandy plain, rising to pretty hillsides overlooking the bay and the low, wooded country of the Chaco on the opposite shore.'
The Buenos Aires treaty of the 3rd of February 1876 fixed the frontier between Argentina and Paraguay, and assigned to Paraguay the portion of the Gran Chaco between Rio Verde and Bahia Negra; the appropriation of the portion between Rio Verde and the Pilcomayo was submitted to the arbitration of the president of the United States, who in 1878 assigned it to Paraguay.
From this centre Spanish adventurers pushed east to La Guayra, beyond the Parana, and west into the Gran Chaco; and before long vast numbers of the less warlike natives were reduced to serfdom.
Grubb, Among the Indians of the Paraguayan Chaco (London, 1904); E.
Gran Chaco >>
In the extreme south are the Bolivian Chaco and the llanos (open grassy plains) of Manzo, while above these in eastern Chuquisaca and southern Santa Cruz are extensive swamps and low-lying plains, subject to periodical inundations and of little value for agricultural and pastoral purposes.
It possesses only one large river in Bolivia, the Pilcomayo, which rises on the east slopes of the Cordillera Oriental opposite the south end of Lake Pampa Aullaguas and flows east and south-east through the sierra region to the Bolivian Chaco.
Nothing definite is known of its tributaries in the Chaco, but in the sierra region it possesses a number of small tributaries, the largest of which are the Cachimayo, Mataca and Pilaya or Camblaya, the latter formed by the Cotagaita and San Juan.
Farther south the llanos of Chuquisaca and Tarija also sustain large herds of cattle on the more elevated districts, and on the well-watered plains of the Chaco.
In the Chaco area, the roseate spoonbill is common in the area's large marshes and riverways.
westward to the Chilean frontier; its eastern end is in the low, wooded plain of the Gran Chaco, where the mean annual temperature is 73Ã‚° F., and the annual rainfall is.
of the Gran Chaco, covered with forests of palms and other tropical vegetation, to the sandy, saline wastes of the Puna de Atacama, almost barren of vegetation and overshadowed by permanently 1 For the geology of Argentina, see Stelzner, Beitrdge zur geologie der argentinischen Republik (Cassel and Berlin, 1885); Brackebusch, Mapa geologico del Interiore de la Republica Argentina (Gotha, 1892); Valentin, Bosquejo geologico de la Argentina (Buenos Aires, 1897) Hauthal, " Beitrage zur Geologie der argentinischen Provinz Buenos Aires," Peterm.
Carranza, Constitucion Nacional y Constituciones Provinciales Vigentes (Buenos Aires, 1898); Angelo de Gubernatis, L' Argentina (Firenze, 1898); Meliton Gonzales, El Gran Chaco Argentino (Buenos Aires, 1890); John Grant & Sons, The Argentine Year Book (Buenos Aires, 1902 et seq.); Francis Latzina, Diccionario Geografico Argentino (Buenos Aires, 1891); Geographie de la Republique Argentine (Buenos Aires, 1890); L' Agriculture et l'Elevage dans la Republique Argentine (Paris, 1889); Bartolome Mitre, Historia de San Martin y de la Emancipation Sud-Americana, segun nuevos documentos (3 vols., Buenos Aires, 1887); Historia de Belgrano y de la Independencia Argentina (3 vols., Buenos Aires, 1883); Felipe Soldan, Diccionario Geografico Estadistico Nacional Argentino (Buenos Aires, 1885); Thomas A.
The South American Missionary Society, founded by the ill-fated Captain Allen Gardiner, has much extended its work among the Indians of the interior of what has been well called " the Neglected Continent "; it has been specially successful among the Araucanians of Chile and the Paraguayan Chaco.
The western section forms part of the great plain called the Gran Chaco (see Argentina), and is to a large extent unexplored.
In the Chaco area, the roseate spoonbill is common in the area 's large marshes and riverways.
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