The Patchwork Girl of Oz (#7 in the Oz series) by L.Frank Baum

Ojo the Unlucky is a Munchkin boy who, devoted to life with his uncle Unc Nunkie in the wilderness but on the verge of starvation, goes to see a neighboring "magician" and old friend of Unc’s, Dr. Pipt. While there they see a demonstration of the Pipt-made Powder of Life, which animates any object it touches. Unc Nunkie and Dr. Pipt's wife are also the sufferers of the consequences of another of the Doctor's inventions, the Liquid of Petrifaction, which turns them into solid marble statues.