heavens, Charles, you really do have a shot at the Shelley Prize,â said Hooker. âIf I were an Alastor Hall rakehell, Iâd be impressed.â
âMy desire to impress those poseurs is nil. Ah, but here comes Parslow. Let us forget my eccentric speculations and enjoy Daydyâs culinary arts.â
The butler entered the vivarium pushing a tea cart laden with the feast. Speaking not a word, he deposited generous portions of lamb and vegetables on each guestâs plate.
âCome, come, Charles, is your Tree of Life really so outlandish an idea?â said Hooker. âDid not your illustrious grandfather Erasmus posit that all warm-blooded creatures arose from a single filament?â
âThat estimable savant could describe no mechanism of transmutation,â Mr. Darwin asserted, then added, clucking his tongue, âbut I can.â
âSo can the Church of England,â said Lyell.
âTell us about your mechanism,â said Hooker.
âIâd rather not. Itâs like confessing a murder.â
âYouâre amongst friends,â said Gould. âWeâll help you bury the body.â
âFirst lunch, then deicide,â said Mr. Darwin.
By Chloeâs reckoning it took the sages a mere thirty minutes to consume a meal that the staff had spent four hours preparing. Whilst the gentlemen ate, the children dutifully amused themselves, Willy ensnaring a cactus plant with the bola his father had brought back from Patagonia, Annie enacting a conversation between her Red Riding Hood doll and its lupine nemesis. (Mr. Darwin had indeed whittled a wolf for his eldest daughter, cloaking it in the dry and scraped pelt of a Derbyshire hare.) No sooner had the sages cleaned their plates than Parslow appeared, carrying a tray of puddings and a bottle of port.
âIâm eager to hear about your momentous crime,â Hooker told the master of Down House, whereupon the butler blanched and hastily withdrew.
âIâll begin by making a naïve observation,â said Mr. Darwin. âWithin any sexually reproducing population, the offspring vary, yes? My Annie, my Henrietta, and my Betty are not duplicates of Mrs. Darwin, nor do they mirror one another. In this phenomenon lies the success of those who seek to improve domestic livestock. Chance provides the breeder with unsolicited novelties that he proceeds to exploit, selecting who shall mate with whomâand thus perpetuating desirable characteristics. And so we get horses faster and stronger than their ancestors, sheep with thicker fleece, and cows of greater fecundity. I contend that, just as a man might produce a superior pig by design, so might Nature craft a better boar by accident.â
âBut how, Charlesâ how ?â asked Gould, eating a forkful of apple tart.
âOur planet is forever in flux. Even as we speak, the Earthâs face is changing through natural processes of erosion, sedimentation, and vulcanism. If that canny geologist Lyell were here, he would corroborate me.â
âPass the cherry tart,â said Lyell with a pained smile.
âFrom an individual animalâs perspective, every alteration in its environment must be greeted with grave suspicion,â said Mr. Darwin. âOft-times the creature finds itself standing by helplessly as temperatures plunge, food supplies diminish, plagues appear, and enemies flourish. But occasionally Nature favors an endangered population, gifting a few offspring with characteristics not only fortuitous but fortunateâa luxuriant pelt, equal to the harshest winter; a mighty jaw, stronger than the toughest nut; a hearty constitution, able to survive epidemics; elongated limbs, crucial for outpacing predators. Compared to their cousins, these lucky juveniles are more likely to survive into adulthood, find matesââ
âAnd pass along the felicitous trait!â interrupted Hooker. âWhat a pretty