When he felt his case unusually serious, and that he positively must find an opening, he would go on ’Change at a busy time, and walk in and out, in a kind of gloomy country dance figure, among the assembled magnates.
There are no more uses of "magnate" in the book.
Show samples from other sources
She is an oil magnate.
I wondered what Rachel had told her father—a fabulously wealthy real estate magnate—to convince him she needed to borrow a helicopter.