---

This is a new annotated edition of Thomas J. Stieltjes´ Collected Papers , first published in 1914 (Vol. I) and 1918 (Vol. II) by Noordhoff, Groningen, in French, and now published by Springer-Verlag, originally to mark the occasion of the 100th anniversary of Stieltjes´ death (1894). These two volumes will be of great interest to all mathematicians who are anxious to understand the impact of Stieltjes´ work on modern mathematics, and in particular on the theory of orthogonal polynomials and continued fractions. In addition to the reproduction of Stieltjes´ papers (I-XLVII), Volume I includes about 75 pages of commentaries by contemporary mathematicians on Stieltjes´ work. Volume II contains Stieltjes´ papers XLVIII-LXXXIV together with English translations of his main paper "Recherches sur les fractions continues" and his short note regarding the Riemann hypothesis. A Bibliography of Stieltjes´ papers is included in both volumes for the convenience of the reader.

---

Volume II.- Biographical Note. - Tome I.- Investigations on Continued Fractions (Translation).- Bibliography.

---