From September 27 to October 20, 1833 Darwin travelled by horseback from Buenos Aires to Santa Fé, sailed back to Buenos Aires and got involved in a revolution. For more details of the trip see the About Darwin web site where you will also find this and other maps.
Set out for Buenos Ayres.
Partridges and Foxes.
Features of the Country.
Natural Enclosures in the Sierra Tapalguen.
Flesh of Puma.
Guardia del Monte.
Effects of Cattle on the Vegetation.
Corral where Cattle are slaughtered.
For details see the About Darwin site http://www.aboutdarwin.com/voyage/voyage05.html, where you will also find the map shown here.
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The Beagle left the Rio Negro on 1 September 1833 and headed north to survey near the Plate River. Darwin received permission to stay behind and explore on yet another inland trek, this time to Buenos Aires.
This chapter contains the following
Numerous gigantic extinct Quadrupeds.
Longevity of Species.
Large Animals do not require a luxuriant Vegetation.
Two Species of Ostrich.
Habits of Oven-bird.
Venomous Snake, Toad, Lizard.
Hybernation of Animals.
Habits of Sea-Pen.
Indian Wars and Massacres.
Arrowhead, antiquarian Relic.
For details see the About Darwin site