Arcadia

Synopsis

In 1809, Thomasina Coverly, the daughter of the house, is a precocious teenager with ideas about mathematics, nature, and physics well ahead of her time. She studies with her tutor Septimus Hodge, a friend of Lord Byron (an unseen guest in the house). In the present, writer Hannah Jarvis and literature professor Bernard Nightingale converge on the house: she is investigating a hermit who once lived on the grounds; he is researching a mysterious chapter in the life of Byron. As their studies unfold – with the help of Valentine Coverly, a post-graduate student in mathematical biology – the truth about what happened in Thomasina's time is gradually revealed.

Scene 1 (Act 1)

The play opens on 10 April 1809, in a garden-front room of the house. Septimus Hodge is trying to distract 13-year-old Thomasina from her curiosity about "carnal embrace" by challenging her to prove Fermat's Last Theorem; he also wants to focus on reading the poem "The Couch of Eros" by Ezra Chater, who with his wife is a guest at the house. Thomasina starts asking why jam mixed in rice pudding can never be unstirred, which leads her to the topic of determinism and to a beginning theory about chaotic shapes in nature. This is interrupted by Chater himself, who is angry that his wife was caught in the aforementioned "carnal embrace" with Septimus; he has come to demand a duel. Septimus tries to defuse the situation by heaping praise on Chater's "The Couch of Eros". The tactic works, because Chater does not know it was Septimus who had savaged an earlier work of his, "The Maid of Turkey". Landscape architect Richard Noakes enters, shortly accompanied by Captain Brice and Lady Croom; the three discuss proposed modifications to the Arcadian style gardens, while Thomasina sketches an imaginary hermit on Noakes's technical drawing of the garden.

Scene 2

The present day. Hannah Jarvis is researching the house, the garden, and specifically the hermit, for a study of hermits and the Romantic imagination. Bernard Nightingale enters with Chloe Coverly; she conceals the professor's identity from Hannah, as Nightingale had given Hannah's last book a poor review. Chloe's brother, Valentine, is gathering data on the population biology of the grouse in the surrounding grounds, using the house's "game books". When Chloe accidentally reveals Bernard's identity, Hannah reacts angrily; but she agrees to share her research material. This enables him to propose the theory that one of the 1809 inhabitants, Ezra Chater, was killed by Lord Byron in a duel. Bernard notes that records of Chater the poet disappeared after 1809, and the only other Chater of record is a botanist.

Scene 3

The 19th century. Septimus is tutoring Thomasina, this time in translating Latin. Again their focus diverts, this time to the destruction of the Alexandrian Library, which upsets Thomasina. She mourns the loss of the knowledge stored there, and Septimus responds that all that was lost will eventually turn up again. They are interrupted by Chater, who succeeds in challenging Septimus to a duel, having learned (from Lord Byron off-stage) that Septimus wrote the damning review of his work.

Scene 4

The present. Hannah rediscovers Thomasina's primer containing her ideas on iteration and chaos theory; this recalls Septimus' assertion that what was lost is eventually rediscovered. Valentine reacts with interest to the notes, as his own research centres on similar concepts.

Scene 5 (Act 2)

Bernard gives Hannah, Valentine, and Chloe a preview of his lecture theorising that Lord Byron shot and killed Chater in a duel. When Hannah and Valentine challenge his logic, Bernard launches into a diatribe about the irrelevance of science, then departs for his lecture (and a promotional media appearance) in London. Hannah begins to suspect that the hermit of Sidley Park – who was reportedly obsessed with algebraic computations about the heat death of the universe, the theory suggested in Thomasina's diagram – could have been Septimus.

Scene 6

Returning to 1809, we learn that the duel never occurred. Instead, the Chater couple left for the West Indies with Captain Brice. Chater served as the expedition's botanist and his wife Charity was the captain's secret paramour. Lord Byron has also left the country. Septimus has gone rabbit hunting for Thomasina, who favours rabbit pie; he returns to find Lady Croom searching for him. She has found two letters, a love letter addressed to her, and another to Thomasina about rice pudding, both written by Septimus in case he died in a duel. She invites Septimus to an amorous rendezvous.

Scene 7

Both 1812 and the present, the actions running concurrently. Some present-day characters are in fancy dress for a party, so that both casts appear similarly attired. After reading a newspaper report on the Byron murder theory, Chloe talks about determinism with Valentine, echoing the discussion between Septimus and Thomasina. Chloe, however, believes that sex is the force that disrupts the universe's ordered plan. Valentine, using his computer to extrapolate Thomasina's ideas, relates them to the later developed concept of entropy. He wonders whether Thomasina or Septimus was the genius behind the theories. Hannah and Valentine mention that Thomasina died in a fire on the eve of her seventeenth birthday.

Meanwhile, Thomasina asks Septimus to teach her to dance, to prepare for her forthcoming 17th birthday party. Lady Croom enters, complaining to Noakes about the noise of his steam engine; Thomasina notes that the machine obeys the laws of entropy (which have not yet been formalized), which describe the universe as winding down. In the present, Bernard arrives and is met by Hannah, who has found a letter detailing the facts of Chater's death – this discovery totally discredits Bernard's theory and vindicates Lord Byron's reputation. While Septimus awaits appropriate music for Thomasina's dance lesson, he examines the sketch she made to illustrate the irreversibility of heat; his action mirrors that of Hannah and Valentine, who pondered the same diagram. Bernard is caught in a compromising position with Chloe, and is asked to depart.

Eventually a waltz starts, and Septimus dances with Thomasina, revealing that their relationship is increasingly complicated by hints of romance. Gus (Valentine and Chloe's younger brother, who has been silent for the entire play) hands another of Thomasina's drawings to a surprised Hannah. It depicts Septimus and the tortoise, confirming her suspicion that the hermit, who had a tortoise called Plautus, was Septimus. After Thomasina's tragic death, he apparently became a hermit. Accepting her challenge to the laws of the universe as propounded by Newton, he worked for the rest of his life to apply "honest English algebra" to the question of the universe's future.


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