Pre-print, Working paper: This paper is chapter 13 of a book forthcoming in January 2007 under the title Histoire du marché financier français au 19 ème siècle (a history of the French capital market in the 19th century). In this chapter, we discuss the changes in the supply of securities on the French capital market in the Belle Epoque: the decline of government issues, the rise of a market for private and even manufacturing firms' issues, the enormous development of foreign issues, both public and private.