What a remarkable collection of stories! It needs to be on the same shelf as Ovid's Metamorphoses because each of the seven stories involves transformations and shape-shifting. The thin framework that Chestnutt uses to relate the stories--that he has taken his wife to North Carolina for the climate and that they have hired ol' Julius who has survived slavery and knows the stories of survival--works well. In six of the seven stories, Aunt Peggy is the conjure woman (except for the second story, "Po' Snady," where it is Tenie). Aunt Peggy is a free woman, a wise woman, the shamaness, the woman connected to the soil, the animals, and the air for her power.
At another level, the "peculiar" institution of slavery shows its permanent scars on the psyche of the freed slaves. In "Mars Jeems's Nightmare," cruel, brutal slave owner, Jeems, gets some of his own medicine to see what it is like to live on the receiving end of an immoral system. In "Sis' Becky's Pickaninny," slave owners barter human lives without conscience until the conjure woman corrects their malevolent ways.
Chestnutt, I assume, learned from Twain the power of writing these tales in the vernacular. Havey you read Twain's short story, "A True Story," published in 1876, about Aunt Rachel? In Chestnutt's book, the idiomatic language is difficult but authentic and it has its own cultural importance.
And then there is Julius, the narrator of these tales. Julius is his own conjurer only this time using his narratives to spin his spells on us. It is a marvelous Russian egg of a book, with wheels turning inside wheels. I loved its complexity.