1878 SOLUTION OF A MATHEMATICAL PROBLEM.
This, his first published work, appeared when he was
nineteen years of age in Annales de M

Three articles, bearing the titles "Memoire et reconaissance," "Perception et matiere" and "L'Idee de neant," which appeared respectively in Revue philosophique (1896), Revue de metaphysique et de morale (1896) and Revue philosophique (1906) have been omitted from their places in the above list because they were subsequently incorporated into the larger works Matiere et Memoire and L'Evolution creatrice.

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