William Gerhardie’s “Futility” must stand with Jane Austen’s “Persuasion” and Hubert Crackanthorpe’s “Wreckage” high among English fiction’s best single-word book titles. Written while its author was still an undergraduate at Oxford and first published in 1922, “Futility” is precisely what the subtitle announces: “A Novel on Russian Themes.” Its overall tone is distinctly Chekhovian, a mixture of comedy and pathos, suffused with low-key irony.