"The Paris financial district at times became so agitated that soldiers had to be sent in to restore order. Another news article told of a hunchback who grew rich by charging traders for the use of his back as a desk for signing paperwork! All of Paris had gone mad, while rising prices and the excessive issue of bank notes cast a rosy light of false prosperity over the entire scene. It was at this point that the word “millionaire” first came into common usage."
www.thecurrencycollector.com/pdfs/John_Laws_Banque_Royale.pdf