Chapter II
Rio de Janeiro: Brazilian forest exploration, insects, spiders, coastal observations, and detailed natural history of tropical fauna.
59 argumentative units
- 01Invitation to estate north of Cape Frio
Darwin notes his arrival at Rio de Janeiro and describes accepting an invitation to visit an Englishman's estate located more than a hundred miles north of the capital.
- 02Landscape and visual beauty of first stage
Darwin describes the striking visual beauty of the landscape during the first day's travel, including the colors, sky, bay, forest grandeur, and the village of Ithacaia.
- 03Anecdote of runaway slaves and racial prejudice
Darwin recounts a story of enslaved people who hid in mountains and a woman who killed herself rather than return to slavery, then reflects on how he judges her deed differently than he would a Roman matron.
- 04Description of moonlit journey through marshes
Darwin describes the desolate nighttime landscape as they continue riding through marshes and lagoons, with minimal light from the moon and occasional wildlife sounds.
- 05Second day's landscape and botanical observations
Darwin describes the sandy plain landscape, fishing birds, parasitic plants including orchids, and the extreme heat on the second day of travel.
- 06Description of venda inns and their characteristics
Darwin provides architectural details of Brazilian inns (vendas), describing their construction, lack of amenities, and typical layout with courtyard.
- 07Critique of venda owners' poor hospitality and conditions
Darwin criticizes the poor service, ungracious manner, and filthy conditions of most venda owners, contrasting one well-managed inn with the general rule.
- 08Observation of marine and freshwater animals in brackish lagoons
Darwin documents freshwater and marine shell species found in coastal lagoons and brackish water habitats, noting the ecological mixing of different faunal types.
- 09Description of forest grandeur and giant tree trunks
Darwin describes the lofty trees with whiteness of trunks, parasitic flowering plants, and ant nests resembling mud volcanoes of Jorullo.
- 10Observation of horse endurance and vampire bat attacks
Darwin notes the remarkable endurance of Brazilian horses and describes witnessing a vampire bat being caught on a horse's withers, providing firsthand evidence of behavior previously doubted in England.
- 11Arrival at Socego estate and description of layout
Darwin describes arriving at Senhor Figuireda's estate and provides details of the simple house architecture, surrounding buildings, and the quadrangle arrangement with coffee drying in the center.
- 12Agricultural production and yields on the estate
Darwin documents the various crops grown at the estate, including coffee, cassava, beans, and rice, with specific yield data and notes on the abundant game and livestock.
- 13Description of abundant hospitality and meals at estate
Darwin describes the generous provision of food at meals and the social customs of hosts, with commentary on the patriarchal style of living despite the moral problem of slavery.
- 14Description of slave labor organization and rest days
Darwin observes the morning bell and cannon announcement at the estate, morning hymn sung by enslaved people, and notes that slaves work for themselves on weekends in this fertile climate.
- 15Second estate on Rio Macae and land potential
Darwin describes visiting another estate that is mostly uncultivated but capable of yielding rich tropical productions, and notes Brazil's vast untapped potential.
- 16Observation of extraordinary evaporation after rain in forest
Darwin describes witnessing vapor rising from forests in visible columns after heavy rain, attributing it to the sun's heating of the large leaf surface area.
- 17Witness account of slave family separation plan
Darwin recounts witnessing a planned atrocity where a slaveholder nearly separated thirty enslaved families for sale, reflecting on how economic interest blinds people to human inhumanity.
- 18Anecdote demonstrating degradation of enslaved people through fear
Darwin describes an encounter where a terrified enslaved man flinched from his gesture, profoundly shocking Darwin and illustrating the psychological damage of slavery.
- 19Forest exploration and insect collection observations
Darwin describes the forest composition with very tall but thin trees, a massive canoe being carved, and the elegant plant forms including palm trees and ferns.
- 20Reflective statement on inability to convey forest grandeur
Darwin acknowledges that while individual forest objects can be described, the overwhelming feelings of wonder and devotion produced by the whole scene cannot be adequately expressed.
- 21Return journey landscape and road conditions
Darwin describes the return journey through sandy plains and notes the poor state of Brazilian roads, including the absence of stone bridges and the marking of death locations with crosses.
- 22Settlement at Botofogo Bay and natural history opportunities
Darwin describes taking up residence at Botofogo Bay and notes the challenge of natural history work in tropical environments where attractions are so numerous as to impede systematic observation.
- 23Definition and characteristics of terrestrial Planaria
Darwin describes the Planaria as simple organisms resembling slugs, with a protrusible mouth, found in damp forest areas, and notes Cuvier's classification of them with intestinal worms.
- 24Experiment on Planaria regeneration from bisection
Darwin describes cutting Planaria in half and observing both halves regenerate into complete animals, including development of missing organs, though a warming climate prevented final completion.
- 25Observation on rapid decomposition of Planaria after death
Darwin notes the extreme difficulty of preserving Planaria due to their rapid dissolution into fluid upon death, faster than any other organisms he observed.
- 26Hunting expedition with Portuguese priest and guide
Darwin describes a hunting trip where he observed Brazilian customs including knife-carrying habits, knife-throwing skill, and the hunting of monkeys and other wildlife.
- 27Geographic description of Corcovado mountain and gneiss-granite formation
Darwin describes the distinctive Corcovado mountain near his residence and notes that conical hills are characteristic of gneiss-granite formations.
- 28Observation and explanation of cloud behavior on Corcovado
Darwin describes witnessing clouds appearing fixed on the mountain summit while wind continues, explaining this through vapor condensation and re-dissolution at different atmospheric temperatures.
- 29Description of May-June climate with temperature and rainfall
Darwin describes delightful winter weather with moderate temperatures, heavy rain events, and the drying effects of southerly winds on the landscape.
- 30Description of evening frog chorus and their vocalizations
Darwin describes Hyla frogs producing pleasing chirps in harmony, their specialized toe suckers for climbing smooth surfaces, and the accompanying sounds of cicadas and crickets.
- 31Detailed observations of firefly light production and color
Darwin describes the green-colored luminescence in various glowing organisms and documents how firefly light intensity is controlled through irritation, with specific observations on abdominal ring behavior.
- 32Description of firefly larvae anatomy and feeding behavior
Darwin describes larval lampyris with weak luminous powers and their singular tail organs that function as suckers and fluid reservoirs for consuming raw meat.
- 33Explanation of elater beetle's springing mechanism
Darwin provides detailed mechanical description of how the click beetle propels itself using a bent spine as a spring, critiquing previous descriptions for underestimating the spine's elasticity.
- 34Visit to Botanic Garden and observation of useful plants
Darwin describes visiting a garden with aromatic spice trees and magnificent fruit trees, noting the dark shade cast by mango and jaca trees.
- 35Observation of blue atmospheric haze and Humboldt's description
Darwin describes observing the thin vapor that softens distant colors into pale grey and blue haze, confirming Humboldt's phenomenon from temperate zone comparison.
- 36Morning walk to Gavia mountain and forest exploration
Darwin describes an early morning walk in cool, fragrant air with observations of dew, insects, birds, and hummingbirds in shaded forest spots.
- 37Discovery of fungus and observation of plant-insect relationships
Darwin finds a Hymenophallus fungus and observes a beetle attracted to it, noting similar plant-insect relationships in different countries despite different species.
- 38Example of broken plant-insect relationships through human introduction of species
Darwin notes that English cabbage and lettuce, which support many herbivores in England, remain untouched in Brazilian gardens, showing disruption of natural pest relationships.
- 39Introduction to comparative entomology of Brazilian insects
Darwin introduces a general discussion of different insect orders observed in Brazil during his large collection effort.
- 40Observation that butterflies indicate tropical zone better than other animals
Darwin notes that brightly colored Lepidoptera are the best indicators of tropical habitat, and that moths appear less common than expected given lush vegetation.
- 41Description of unusual landing and running behavior of Papilio feronia butterfly
Darwin describes this butterfly landing head-down with wings horizontal rather than folded, and using its legs for running, which allowed it to escape his collecting attempts.
- 42Discovery that Papilio feronia butterfly produces clicking noise
Darwin documents observing pairs of Papilio feronia making clicking sounds similar to toothed wheels, audible at twenty yards distance, contradicting previous knowledge.
- 43Observation that tropical Coleoptera are mostly minute and obscure
Darwin notes the predominance of small, obscure beetles in tropics, with European collections lacking these specimens, suggesting vast future cataloging challenges.
- 44Question about scarcity of carnivorous beetles in tropics
Darwin notes that carnivorous beetles (Carabidae) appear in far fewer numbers in tropics compared to their abundance in temperate regions, and questions if spiders or wasps fill this ecological role.
- 45Observation of abundant plant-feeding beetles and other insects in tropics
Darwin notes the astonishing numbers of beetles feeding on vegetation, particularly Rhyncophora and Chrysomelidae, and emphasizes counting individuals rather than species.
- 46Description of ant forage trails and collective labor
Darwin describes being astonished by the well-beaten ant trails throughout tropical forests with armies of foragers carrying green leaf pieces larger than their bodies.
- 47Detailed observation of small dark ant swarm behavior and intelligence
Darwin describes a massive ant swarm at Bahia trapping other insects and displaying remarkable problem-solving behavior when encountering obstacles.
- 48Description of wasp species that paralyze spiders and caterpillars for larvae
Darwin describes clay-cell wasps that sting prey to precise paralysis levels, allowing larvae to feed on living but immobilized victims.
- 49Detailed observation of deadly combat between Pepsis wasp and Lycosa spider
Darwin witnesses an extended hunt and combat between a wasp and spider, with the wasp ultimately using tactical maneuvering to deliver lethal stings before collecting the body.
- 50Observation of spider abundance and variety in Brazil compared to England
Darwin notes that spiders are proportionally more abundant in Brazil than England, with jumping spiders showing almost infinite species variety.
- 51Description of diverse Epeira spider forms with various morphologies
Darwin describes the variety of Epeira spider forms in Brazil, including species with pointed shells and spiny tibiae, and notes one species with very strong yellow webs.
- 52Description of parasitic spider living on large Epeira webs
Darwin describes a small spider with long front legs that lives as a parasite on large Epeira webs, preying on minute insects and avoiding notice through feigned death.
- 53Description of large Epeira wrapping and poisoning trapped insects
Darwin describes how a large Epeira rapidly wraps captured insects in silk and delivers a fatal bite, with poison acting quickly enough to kill a wasp in thirty seconds.
- 54Description of Epeira defensive behaviors when threatened
Darwin describes the Epeira's position at the web center and its varied defensive responses: falling if vegetation exists below, moving through passages if ground is clear, or vibrating the entire web.
- 55Comparison of British spider web management strategies
Darwin notes that British spiders typically cut web lines to free trapped insects and preserve nets, contrasting with a British hothouse spider that persisted in entangling a wasp.
- 56Anecdote of spider persistently feeding on large wasp prey
Darwin describes a small spider that continued feeding for twenty-four hours on a much larger wasp, becoming greatly distended by the prey's juices.
- 57Observation of gregarious spider colonies with connected webs
Darwin describes large black spiders with ruby marks building vertically-oriented webs connected by common lines, encompassing bushes in a community structure.
- 58Analysis of gregarious behavior as anomaly in solitary, bloodthirsty genus
Darwin notes that gregarious behavior in Epeira is remarkable given the genus's typical solitary and cannibalistic nature, and compares his observations to Azara's description from Paraguay.
- 59Description of spider with asymmetrical wedge-shaped web
Darwin describes finding a spider in the Cordillera with an unusual asymmetrical web consisting of only two rays connected by mesh instead of a full circular pattern.