The Hunting of the Snark of the poem as a child. Additionally, it has also been alluded to in fiction, such as "Perelandra" (1943) by C.S. Lewis; television, such as "" episode of the British TV crime drama "Lewis"; court rulings, such as in Parhat v. Gates (2008); a phenomenon in superfluidity; graph theory; geography, as a Snark Island and Boojum Rock exist in the Andaman and Nicobar Islands in the Bay of Bengal; Japanese animation, such as "Ghost Hound" (2007–08); and in video games, such as "Half-Life" (1998) and "American McGee's Alice" (2000). Various themes have been suggested by scholars. According to biographer Florence
Lewis Carroll with a bloody nose, which he recorded in his diary and noted that the episode left him not feeling himself for "quite sometime afterward". This attack was diagnosed as possibly "epileptiform" and Carroll himself later wrote of his "seizures" in the same diary. Most of the standard diagnostic tests of today were not available in the nineteenth century. Yvonne Hart, consultant neurologist at the John Radcliffe Hospital, Oxford, considered Dodgson's symptoms. Her conclusion, quoted in Jenny Woolf's 2010 "The Mystery of Lewis Carroll", is that Dodgson very likely had migraine, and may have had epilepsy, but she emphasises that she