This is cutesy. I don't mean that as a negative. In fact,these stories highlight what is often forgotten: writers will write about anything--and that is an exciting thing to be reminded of, both as reader and as writer. Reading these stories, I pictured another great writer, Ray Bradbury writing a tale a day about whatever captured his fancy. I assume Graves was the same way.
Although there are fine proper stories in here, a lot of them aren't. Proper, I mean. (With few exceptions, they're all great.) Instead of thematic and character arcs, you could say they're tales told by a raconteur and overheard by the author. A usual construction is a first person narration by the author himself. He meets a neighbor or friend usually in Majorca where he lives, who proceeds to tell a colorful story about other people. Some stories are a page or two pages long. They're amusing miscellany.
Graves is essentially a comic writer. He's alive to irony, satire, absurdity, the little screw ups and beneficial happenstances of life that say the universe has a sense of humor. He pokes fun at the stuffy English aristocracy, at stuffy religious moralists. At his own childhood. Many stories are about that. In the preface, his daughter Lucia, who edited the book, quotes her father as saying he doesn't know how to write fiction. Many of the stories are autobiographical, what he did or what he heard from others. Many are about his life in Majorca where he falls into local adventures and meets passionate people. His outlook is always comic and always alive to his surroundings in case it could make a good story. It usually does.
But then we get supernatural stuff, and historical fiction. His stories about the Roman Empire are some of the best in the book. Of course he was a poet and translator of Greek and Latin texts, and he takes fully advantage of his erudition to craft highly entertaining stories about how the Romans lives. There's also wonderful stories about WWI, where he served. There is a moving account of the life of his mother, and he honors her as a parent by crafting a beautiful and comprehensive mini bio of her life.
There are 52 stories in 326 pages. They are dramatic, comic, moving, ribald, but most of all joyous. It's getting back to the freedom the writer has--that is hardly ever expressed to the reader--that he can write well about everything, and that creativity and art don't depend on usual forms. If you prefer the usual form of a short story, give this book a chance. By the end, you'll have loved it.