The Question and Answer section for Journey to the Center of the Earth is a great resource to ask questions, find answers, and discuss the novel.
I see no evidence of "Italians" in Chapter Forty-three of the text.
I see no reference to the "yo-yo" in the text. Chapter please?
As Axel is the story's narrator, I see no evidence of him providing a physical description of himself. He does, however, give a detailed description of his uncle. Did your question have a corresponding chapter number?