Porta Praya-Ribeira Grande-Atmospheric Dust with Infusoria-
Habits of a Sea-slug and Cuttle-fish-St. Paul's Rocks, non-
volcanic-Singular Incrustations-Insects the first Colonists of
Islands-Fernando Noronha-Bahia-Burnished Rocks-Habits of
a Diodon-Pelagic Confervæ and Infusoria-Causes of discol-
oured Sea
Rio de Janeiro-Excursion north of Cape Frio-Great Evaporation-
Slavery-Botofogo Bay-Terrestrial Planaria-Clouds on the Cor-
covado Heavy Rain-Musical Frogs-Phosphorescent Insects-
Elater, springing powers of-Blue Haze-Noise made by a Butter-
fly-Entomology-Ants-Wasp killing a Spider-Parasitical Spider
-Artifices of an Epeira-Gregarious Spider-Spider with an un-
symmetrical Web
Monte Video-Maldonado-Excursion to R. Polanco-Lazo and Bolas
-Partridges-Absence of Trees-Deer-Capybara, or River Hog
-Tucutuco- Molothrus, cuckoo-like habits- Tyrant-flycatcher-
Mocking-bird Carrion Hawks - Tubes formed by Lightning—
House struck
Rio Negro-Estancias attacked by the Indians-Salt Lakes-Flamin-
goes R. Negro to R. Colorado-Sacred Tree-Patagonian Hare-
Indian Families-General Rosas-Proceed to Bahia Blanca-Sand
Dunes Negro Lieutenant-Bahia Blanca-Saline Incrustations-
Punta Alta-Zorillo
Bahia Blanca-Geology-Numerous gigantic extinct Quadrupeds—
Recent Extinction-Longevity of Species-Large Animals do not
require a luxuriant vegetation-Southern Africa-Siberian Fossils
-Two Species of Ostrich-Habits of Oven-bird-Armadilloes-
Venomous Snake, Toad, Lizard-Hybernation of Animals-Habits
of Sea-Pen-Indian Wars and Massacres-Arrow-head, antiquarian
Relic