The Hunting of the Snark follows a crew of ten trying to hunt the Snark, an animal which may turn out to be a highly dangerous Boojum. The only one of the crew to find the Snark quickly vanishes, leading the narrator to explain that it was a Boojum after all. The poem is dedicated to young Gertrude Chataway, whom Carroll met at the English seaside town Sandown in the Isle of Wight in 1875. Included with many copies of the first edition of the poem was Carroll's religious tract, "An Easter Greeting to Every Child Who Loves "Alice"". "The Hunting of the Snark" was
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