The Adventures of Captain Hatteras

The Adventures of Captain Hatteras · Chapters

Chapters explained

Chapter companions for The Adventures of Captain Hatteras by Jules Verne.

  1. Chapter 1

    Part I: The English at the North Pole

    The chapter introduces the mysterious preparations for an Arctic expedition aboard the ship Forward, including a strange letter to Commander Shandon and the recruitment of Dr. Clawbonny. The crew is assembled under secretive circumstances, and a dog named Duke appears with a cryptic message, hinting at the enigmatic leader of the voyage.

  2. Chapter 2

    The Forward

    The chapter introduces the mysterious brig Forward, being prepared in Liverpool for an unknown voyage. Richard Shandon oversees the provisioning of the ship with supplies for six years, including antiscorbutics and explosives, sparking public curiosity. Rumors circulate about a dog captain, and the ship's strange design and purpose are debated by onlookers.

  3. Chapter 3

    An Unexpected Letter

    Richard Shandon receives a mysterious letter from an unknown captain, K. Z., offering him the position of mate on a brig called the Forward. The letter includes detailed instructions for building the ship, selecting a crew of eighteen men, and preparing for a long and perilous voyage. Shandon is promised a high salary and a share of the renown the voyage will bring. The letter also mentions a Danish dog to be received later and that the captain will reveal himself in due time.

  4. Chapter 4

    Dr. Clawbonny

    Richard Shandon, a seasoned sailor, accepts the mysterious offer from K. Z. to command the Forward. He begins assembling a crew and overseeing the ship's construction in Birkenhead. Dr. Clawbonny, a cheerful and learned man, arrives after receiving his own letter from K. Z., eager to join the expedition despite knowing nothing of its destination.

  5. Chapter 5

    The Dog-Captain

    On April 5th, the day of departure, the crew of the Forward prepares to sail amid unease and superstition. Dr. Clawbonny's presence reassures some, but the mysterious captain's cabin remains locked, and the crew's anxiety grows. The ship's dog, called 'Captain,' behaves oddly, walking windward and avoiding contact, fueling superstitious fears. Shandon, the doctor, Wall, and Johnson discuss the lack of orders; Johnson advises sailing regardless. At noon, with no letter, Shandon orders departure, but the dog appears with a letter in its mouth, instructing Shandon to sail toward Cape Farewell and through Davis Strait to Melville Sound, signed 'K. Z., Captain of the Forward.'

  6. Chapter 6

    At Sea

    The Forward sets sail and the crew adapts to life at sea. Dr. Clawbonny engages in discussions with Shandon and Johnson about the mysterious captain and the voyage's purpose. The doctor demonstrates his knowledge of Arctic exploration history. Shandon assesses the crew's qualities, and the ship makes steady progress toward Greenland.

  7. Chapter 7

    VI: The Great Polar Current

    The Forward continues its northward journey, encountering birds, ice, and the powerful polar current. Dr. Clawbonny and Shandon discuss the current's origin and its implications for a Northwest Passage, supported by the discovery of a mahogany tree trunk that must have come from Bering Strait. The crew sights Cape Farewell, and the doctor reflects on the many explorers who passed that point never to return.

  8. Chapter 8

    VII: The Entrance of Davis Strait

    The Forward navigates the treacherous ice of Davis Strait, with Dr. Clawbonny and Johnson discussing the mysterious captain, the crew's unease, and the harsh polar environment. The ship battles ice fields, uses steam power, and observes wildlife while making slow progress northward.

  9. Chapter 9

    The Talk of the Crew

    The crew of the Forward grumbles about the harsh conditions, the lack of alcohol, and the mysterious captain. Clifton insists the dog is the captain, citing its strange behavior. Shandon and Johnson struggle to navigate through treacherous ice, while the men debate the unknown leader and their mission.

  10. Chapter 10

    Another Letter

    The Forward crosses the Polar Circle and sails up Baffin's Bay. Richard Shandon discovers a second mysterious letter from the captain, K.Z., praising the crew and ordering a course toward Melville Bay and Smith's Sound. The doctor suggests the captain must be on board, but Shandon rejects the idea. Despite concerns from Johnson about morale, Shandon reads the letter to the crew, deepening their unease. The ship passes Disco Island and Upernavik, with the doctor reflecting on Franklin's lost expedition.

  11. Chapter 11

    X: Dangerous Sailing

    Shandon, Dr. Clawbonny, and others visit the Eskimo settlement at Upernavik, where the doctor studies the inhabitants and Shandon seeks a mysterious European without success. After waiting and firing signals, the Forward departs on May 8. The crew faces ice obstacles, snow-blindness, and growing demoralization as Shandon's uncertainty becomes apparent. On May 16, the ship is stuck in ice, and Shandon, the doctor, and Garry reconnoiter from an iceberg, seeing no clear passage.

  12. Chapter 12

    XI: The Devil’s Thumb

    During the commander's absence, the crew grows discontented and mutinous, plotting to abandon the expedition and return south. They blame the mysterious dog for their misfortunes and attempt to kill it. A terrifying mirage of the Devil's Thumb and a magnified apparition of the dog, caused by refraction, further frighten the sailors, deepening their superstition and rebellion.

  13. Chapter 13

    Captain Hatteras

    This chapter reveals the true identity and history of Captain John Hatteras, a man driven by an obsessive desire to reach the North Pole and secure English glory in exploration. It recounts his previous failed expeditions, his secret planning of the Forward's voyage, and his dramatic revelation to the crew during a moment of crisis when the ship is trapped by ice. The crew's mutiny is quelled by Hatteras's commanding presence.

  14. Chapter 14

    The Captain's Plans

    Captain Hatteras reveals his plan to reach the North Pole, presenting evidence of an open polar sea and outlining a route through Lancaster Sound and Wellington Channel. He faces cold resistance from Shandon, who feels displaced as commander, while the doctor and other officers express support. Hatteras then demonstrates his leadership by using a powder charge and cannon concussion to free the Forward from encroaching ice, earning the crew's cheers.

  15. Chapter 15

    XIV: The Expeditions in Search of Franklin

    The Forward continues its perilous voyage through polar seas, passing Possession Bay and Lancaster Sound. Hatteras and Dr. Clawbonny discuss the history of Arctic exploration, particularly the many expeditions sent to find Sir John Franklin. The doctor recounts the efforts of James Ross, MacClure, MacClintock, Belcher, and others, culminating in MacClintock's discovery of Franklin's fate. Hatteras remains determined to succeed where others have failed.

  16. Chapter 16

    XV: The Forward Driven Southward

    Hatteras is forced to retreat southward through Prince Regent's Channel, despite his desire to go north. The crew grows increasingly discontented, and tensions rise between Hatteras and Shandon. The Forward passes several historical sites, including Leopold Harbor, where Hatteras refuses to leave any trace of their expedition. The chapter highlights the crew's lack of unity and Hatteras's growing isolation.

  17. Chapter 17

    The Magnetic Pole

    The Forward enters Bellot Sound, navigating treacherous ice and storms. Hatteras grows anxious as the crew's morale wanes. After clearing the strait, they find the northward path blocked. Hatteras turns toward Franklin Sound, eventually anchoring near the magnetic pole. Dr. Clawbonny goes ashore, confirms the magnetic pole's location, and builds a cairn.

  18. Chapter 18

    The Fate of Sir John Franklin

    The Forward navigates past King William's Land, where Dr. Clawbonny recounts the tragic fate of Sir John Franklin's 1845 expedition. The crew becomes deeply moved, and Captain Hatteras declares that safety lies to the north, inspiring the men to continue northward.

  19. Chapter 19

    XVIII: The Way Northward

    The crew of the Forward, motivated by the promise of monetary rewards for each degree of latitude crossed, sails northward through Melville Bay. Shandon expresses his deep resentment and skepticism about Hatteras's leadership, predicting failure once hardships begin. The doctor befriends Duke, the dog, while Shandon and Wall discuss the imprudent use of coal and the captain's reckless drive toward the Pole.

  20. Chapter 20

    A Whale in Sight

    The Forward navigates Melville Bay, encountering a sudden storm that tests Hatteras's seamanship. After the storm, Simpson spots a whale, and Hatteras orders a hunt. The whaleboat pursues the whale into dangerous ice fields, but Johnson cuts the line to save the crew as icebergs crush the whale.

  21. Chapter 21

    XX: Beechey Island

    The Forward arrives at Beechey Island, a historic rendezvous for Arctic explorers. Hatteras hopes to replenish coal supplies from stores left by previous expeditions, but finds the depot completely pillaged by Eskimos. Despite this setback, Hatteras resolves to continue north through Wellington Channel, while Shandon suggests retreat. The doctor explores the island, collecting specimens and observing wildlife.

  22. Chapter 22

    The Death of Bellot

    The Forward struggles through Wellington Channel as Hatteras pushes northward against growing crew discontent. The chapter recounts the tragic death of Lieutenant Bellot, a French officer lost on the ice, and details the crew's increasing mutinous sentiment as cold and ice close in.

  23. Chapter 23

    The First Signs of Mutiny

    Hatteras orders the fires lit to continue northward, but the crew, led by Pen, mutters dissent about fuel and winter survival. Pen openly defies the captain, who threatens him with a revolver and has him put in irons. The Forward struggles through ice and fog, passing Point Beecher and Prince Albert's Land, while Shandon grows skeptical of the open polar sea. The doctor and Johnson discuss loyalty and Hatteras's determination.

  24. Chapter 24

    Attacked by the Ice

    The Forward, under Hatteras's command, struggles through ice-choked waters in Penny Strait, facing mounting dangers as winter approaches. Hatteras obsessively seeks the open polar sea, while the crew grows mutinous under Shandon's covert encouragement. A terrifying ice avalanche attacks the ship, which is lifted and nearly crushed, but survives. The chapter ends with the ship forced to consider winter quarters as the ice closes in.

  25. Chapter 25

    Preparations for Wintering

    The Forward is firmly trapped in ice at the pole of cold, and Captain Hatteras, aided by Johnson and Dr. Clawbonny, oversees extensive preparations for winter. The crew cuts away ice from the hull, builds a snow wall around the ship, and constructs a canvas roof. Interior spaces are insulated, stoves and condensers are installed, and a strict daily routine with diet and hygiene is established to combat cold and dampness. The work takes about three weeks, reaching October 10th without incident.

  26. Chapter 26

    One of James Ross’s Foxes

    The crew of the Forward endures the onset of the Arctic winter, with temperatures dropping and the sun disappearing. Hunters supply fresh meat, but the animals become shy and difficult to approach. A hunting party mistakes a white fox for a bear due to refraction, and upon killing it, discovers a copper collar from James Ross's 1848 expedition, revealing the fox's age and its intended role in aiding the lost Franklin expedition. The chapter ends with a spectacular meteor shower observed by the doctor.

  27. Chapter 27

    The Last Piece of Coal

    The crew of the Forward endures extreme cold, with temperatures dropping to -44°F. Scurvy ravages the crew, leaving only a few healthy men. The last piece of coal is burned, signaling a dire fuel crisis. Dr. Clawbonny tends to the sick, while Hatteras remains stoic and unaffected by the cold. The chapter highlights the crew's suffering and the impending doom as resources dwindle.

  28. Chapter 28

    The Great Cold at Christmas

    The crew of the Forward faces extreme cold and a fuel crisis as temperatures plummet to -66°. After the fire goes out, tensions rise and mutinous talk leads to Hatteras nearly striking Pen with an axe. Hatteras refuses to burn the ship, but eventually permits the crew to take wood from less essential parts. On Christmas Day, the ship is dismantled for fuel. The doctor discovers a passage in Sir Edward Belcher's account mentioning coal deposits, but Hatteras realizes the ice-field has drifted, putting the coal supply far out of reach.

  29. Chapter 29

    Preparations for Departure

    Hatteras keeps secret the fact that the Forward is being driven northward by an irresistible current, fearing the crew's despair. He and the doctor decide to seek coal deposits reported by Sir Edward Belcher, now 250 miles south. Preparations for a sledge expedition are made over four days, including a sledge, dogs, provisions, and equipment. Hatteras selects his team: himself, Dr. Clawbonny, Bell, and Simpson, leaving Johnson in command of the ship to watch over Shandon and the others. Despite the crew's hostility, the expedition departs on January 6th, with Hatteras feeling a pang as he leaves the Forward behind.

  30. Chapter 30

    Across the Ice-Fields

    The small expedition, led by Hatteras, traverses the treacherous ice-fields southeastward. They endure harsh conditions, including a snowstorm and frost-rime, which separates the group. After climbing an iceberg to escape the fog, they reunite and discover a troop of bears and foxes ravaging their sledge. Despite firing their guns, the animals escape. The journey continues with difficulty, and they build snow-huts for shelter.

  31. Chapter 31

    XXX: The Cairn

    After a polar bear attack destroys much of their supplies, the sledge party debates whether to return to the ship or press on. They decide to continue, enduring extreme cold, frostbite, and the worsening health of Simpson, who develops severe scurvy. On January 23rd, Duke discovers a cairn containing a damp paper from the Porpoise, dated December 13, 1860, indicating other travelers have been in the area. Hatteras insists on pushing forward despite the discovery.

  32. Chapter 32

    The Death of Simpson

    The chapter details the harrowing journey of Hatteras, the doctor, and Bell as they struggle through extreme Arctic conditions. Simpson's health deteriorates fatally, and the group faces violent storms, scarce supplies, and the discovery of traces from the American ship Porpoise. Simpson dies, accusing Hatteras with his last breath, while Hatteras remains stoic and resolute.

  33. Chapter 33

    The Return to the Forward

    Hatteras, the doctor, and Bell, after discovering the American Altamont buried in the ice, return to the Forward only to find it ablaze, set on fire by the mutinous crew who have fled. Despite the loss, Hatteras rallies his remaining companions to continue toward the North Pole.

  34. Chapter 34

    Part II: The Desert of Ice

    The expedition enters a vast, desolate ice field, facing extreme cold, dwindling supplies, and the psychological strain of isolation. The crew's morale deteriorates as they confront the harsh realities of the Arctic wilderness.

  35. Chapter 35

    The Doctor's Inventory

    After the explosion of the Forward, Captain Hatteras and his remaining crew—Dr. Clawbonny, Johnson, and Bell—assess their dire situation. The doctor and Johnson search the wreckage for supplies, finding only limited food and fuel. They construct an ice house for shelter and bring the rescued American, Altamont, to safety. The chapter focuses on the inventory of remaining resources and the group's struggle for survival.

  36. Chapter 36

    Altamont's First Words

    The castaways debate their next move after the destruction of the Forward. Hatteras hesitates to abandon his quest for the North Pole, but the doctor, Johnson, and Bell argue for an immediate journey south to reach the coast. Johnson recounts the mutiny led by Shandon, the crew's debauchery, and the burning of the ship. Hatteras finally asks for their opinions, revealing their dire situation: only three weeks of supplies remain, and they are 600 miles from the nearest sea.

  37. Chapter 37

    III: Seventeen Days of Land Journey

    The castaways learn from Altamont that the American ship Porpoise is stranded nearby, offering hope of supplies. They decide to journey to the wreck instead of heading to Baffin's Bay. The group prepares a sledge and sets out, facing extreme cold, fog, and dwindling rations. Hatteras grows suspicious of Altamont's motives. After sixteen days, they reach latitude 82° but are exhausted and still far from the ship. The doctor kills a seal for food, but it provides little sustenance.

  38. Chapter 38

    IV: The Last Charge of Powder

    The group faces extreme hunger and cold, with only three days of food left. Johnson notices a bear following them, and Dr. Clawbonny devises a plan to create a bullet from frozen mercury, recalling a technique from Captain Ross's voyage. They prepare to hunt the bear to survive.

  39. Chapter 39

    The Seal and the Bear

    Hatteras devises a dangerous plan to hunt a polar bear by disguising himself in a sealskin. The doctor and Johnson watch from a distance as Hatteras successfully lures and kills the bear, providing much-needed food and fuel for the expedition. Later, tensions simmer between Hatteras and Altamont as the group continues northward, with the doctor and Johnson privately discussing potential rivalry between the two captains.

  40. Chapter 40

    The Porpoise

    The travelers discover the American ship Porpoise buried in snow and ice, finding ample supplies of food, fuel, and materials. They decide to build a snow-house on the mainland for shelter, with Dr. Clawbonny leading the construction. The chapter details the inventory of the ship's provisions, the selection of a building site, and the construction of a fortified dwelling, while tensions simmer between Hatteras and Altamont over national pride and future plans.

  41. Chapter 41

    A Discussion About Charts

    Altamont recovers fully and joins the crew in preparing for winter. A naming ceremony for the newly discovered land leads to a heated dispute between Hatteras and Altamont over national claims, with the doctor mediating. They agree on 'New America' for the continent, 'Cape Washington,' 'Victoria Bay,' 'Johnson Island,' 'Bell Mountain,' and 'Fort Providence.'

  42. Chapter 42

    Excursion to the North of Victoria Bay

    The chapter describes an expedition by Altamont, Dr. Clawbonny, and Bell to hunt north of Victoria Bay, while Hatteras explores the coast. The doctor builds an electric lighthouse using a Bunsen pile from the Porpoise to guide travelers. The hunters observe signs of seals and discuss Eskimo eating habits. They lose their way but are guided back by Duke to the light of Fort Providence.

  43. Chapter 43

    Cold and Heat

    After a successful hunt, the crew enjoys a warm meal and a discussion about extreme temperatures, both hot and cold, led by Dr. Clawbonny. The doctor shares scientific anecdotes about heat tolerance and historical cold records, while Hatteras steers the conversation toward the dangers of Arctic cold. The chapter ends with the group preparing for sleep, and the doctor admiring an aurora borealis.

  44. Chapter 44

    X: The Pleasures of Winter-Quarters

    The chapter describes the monotony and enforced idleness of winter quarters at the Pole, where the crew is confined to their snow-house due to severe weather. Dr. Clawbonny tries to keep spirits up by reading about Captain Parry's winter entertainments, including a newspaper and theatre, and reflects on the growing tension between Hatteras and Altamont. The doctor serves as the moral and intellectual center, striving to maintain harmony and distract his companions from their rivalry and the harsh conditions.

  45. Chapter 45

    Disquieting Traces

    After a storm, the crew clears snow from Doctor's House and prepares for hunting. They discover numerous bear tracks surrounding Fort Providence, indicating a potential threat. Hatteras, wary of Altamont, convenes a private meeting with the Englishmen to discuss their future plans to push toward the North Pole, despite the lack of a boat and the presence of the American.

  46. Chapter 46

    The Ice Prison

    Hatteras, Altamont, and Bell go hunting but are chased back to Fort Providence by five bears, trapping them inside while Dr. Clawbonny is away exploring Johnson Island. The men struggle to defend themselves, using a hot poker to fend off the bears, but the animals begin burying the snow-house, threatening suffocation. They plan a night sortie to escape and warn the doctor of the danger.

  47. Chapter 47

    The Mine

    The crew, besieged by bears, is rescued by Dr. Clawbonny who tunnels into the fort from the powder magazine. He devises a plan to blow up the bears using an electric fuse and a fox carcass as bait.

  48. Chapter 48

    The Polar Spring

    Dr. Clawbonny persuades Captain Hatteras to allow the use of the American ship Porpoise's wreckage to build a launch for summer exploration, arguing that the glory of reaching the Pole belongs to the expedition's leader regardless of the boat's origin. Altamont agrees to join the expedition and to help build the boat. The chapter then describes the arrival of the polar spring: a sudden thaw, the return of birds and animals, and the brief resurgence of life, followed by a sharp freeze that forces the men to wait for warmer weather.

  49. Chapter 49

    XV: The Northwest Passage

    As spring arrives and the ice begins to thaw, Hatteras, Altamont, and the doctor debate the existence of an open polar sea and the merits of the Northwest Passage. The discussion escalates into a heated nationalistic argument between Hatteras (English) and Altamont (American) over the achievements of explorers like Kane and MacClure, with the doctor attempting to mediate. The chapter ends with unresolved tension as Altamont retires and Hatteras paces alone.

  50. Chapter 50

    XVI: Northern Arcadia

    On May 29th, the sun does not set for the first time, marking the beginning of continuous daylight. The doctor observes a magnificent halo and notes the arrival of birds. As snow melts, the landscape transforms, and the doctor plants seeds, discovering natural sorrel. The temperature rises to 57°F by June 15th, and the ice begins to break. A trip to Johnson Island is made, and Hatteras explores the lands beyond Cape Washington. The launch is being built by Bell and Johnson. On June 17th, Hatteras, the doctor, and Altamont embark on a hunting trip to the east. They encounter Arctic hares, ptarmigan, and reindeer that show no fear, indicating they have never seen humans. The doctor advocates for kindness and refrains from shooting, naming the valley 'Northern Arcadia.' They spend the night in a rock cleft without killing any animals.

  51. Chapter 51

    Altamont's Revenge

    Hatteras, Altamont, and Dr. Clawbonny hunt musk-oxen. Hatteras is attacked by two oxen and nearly killed, but Altamont saves his life. The two rivals reconcile, shake hands, and agree to share the glory of reaching the North Pole. Dr. Clawbonny celebrates their newfound brotherhood, and they return to Fort Providence where Johnson and Bell welcome them.

  52. Chapter 52

    The Last Preparations

    The chapter details the final preparations for the expedition's journey to the North Pole. The weather turns cold again, and Bell finishes a new launch. Hatteras is eager to depart, setting June 25th as the start date. The sledge is repaired, and supplies are loaded, totaling 1,500 pounds. The men are in good health after following the doctor's advice. A trial trip to Cape Washington reveals a bear catching a seal. The doctor encourages training for the journey. On June 23rd, they rest, and the inhabitants of Fort Providence feel emotional about leaving their shelter.

  53. Chapter 53

    The Journey Northward

    The expedition sets out northward from Fort Providence under favorable summer conditions. The team, including Hatteras, Dr. Clawbonny, Altamont, Bell, and Johnson, travels with a dog-drawn sledge across the plains and plateaus of New America. They encounter varied terrain, including melting snow, lakes, and rugged icy hills, and witness phenomena such as red snow. The journey proceeds smoothly with good spirits, fresh game, and no major obstacles.

  54. Chapter 54

    Footprints on the Snow

    The expedition encounters unmistakable signs of other Europeans ahead of them near the Pole, including a European shoe print and a telescope lens, causing frustration and anger in Hatteras. A violent hurricane reshapes the landscape, revealing the open polar sea, and the group reaches Altamont Harbor, where they prepare to launch their boat. Dense fog slows their progress, and the discovery of the footprints heightens tensions as they push northward.

  55. Chapter 55

    XXI: The Open Sea

    The crew departs Altamont Harbor after discovering that mysterious footprints were their own. They sail northward across an open, vibrant polar sea teeming with wildlife, experiencing strange optical and atmospheric phenomena as they approach the North Pole.

  56. Chapter 56

    The Approach to the Pole

    As the launch nears the Pole, Hatteras spots what he believes to be land, possibly a volcano, but a sudden storm and a floe covered with bears threaten the crew. Despite the dangers, they press on, driven by obsession and the desire to reach the unknown.

  57. Chapter 57

    The English Flag

    After Hatteras is lost overboard during a storm, the crew mourns him, but Duke discovers him alive on the shore of a volcanic island at the North Pole. They reunite, take observations confirming they are at latitude 89° 59′ 15″, and Hatteras declares the island 'Queen Island.' A document is prepared to record the discovery.

  58. Chapter 58

    Polar Cosmography

    The crew celebrates their arrival near the North Pole, and Dr. Clawbonny delivers a lively lecture on polar science, explaining the Earth's rotation, axial immobility, weight variations, and historical myths about the Pole. Captain Hatteras remains intensely focused and emotionally charged.

  59. Chapter 59

    Mount Hatteras

    After reaching the North Pole, Hatteras becomes increasingly obsessed with setting foot on the exact point of the Pole, which is the summit of an active volcano. Despite the pleas of his companions, he climbs the volcano alone, nearly falling into the crater. He is saved by Altamont and his dog Duke, but the ordeal leaves him permanently insane.

  60. Chapter 60

    Return to the South

    After Captain Hatteras goes mad, the remaining crew—Clawbonny, Altamont, Johnson, and Bell—decide to return south. They build a cairn on Queen's Island, leave a record of Hatteras's discovery, and sail back. They find Fort Providence destroyed by animals, forcing them to continue toward Baffin's Bay. During the arduous journey across North Devon, they discover the frozen bodies of Shandon, Pen, and the mutinous crew of the Forward, who perished from starvation and despair. The group struggles onward, exhausted and low on provisions.

  61. Chapter 61

    Conclusion

    The survivors of the Forward are rescued by a Danish whaler and return to England, where Dr. Clawbonny publishes an account of the expedition, glorifying John Hatteras. Hatteras, now mad, lives quietly at Starr Cottage, perpetually walking northward, accompanied by his faithful dog Duke.

  62. Chapter 62

    Endnotes

    The chapter contains endnotes providing brief explanations of terms and references used in the main text, including the meridian of Greenwich, a peculiar ice-sky color, local seabirds, and an inflatable india-rubber device.