Introduction PART I. THE DIALECTIC OF THE SCIENCES (1896-99) 1 Note on the Logic of the Sciences [c.1896] 2 Various Notes on Mathematical Philosophy [1896-98] 3 Four Notes on Dynamics [c. 1896] 4 Review of Hannequin Essai critique sur l'hypothese des atomes dans la science contemporaine [1896] 5 On Some Difficulties of Continuous Quantity [1896] 6 Review of Couturat, De l'lnfini mathematique [1897] 7 On the Relations of Number and Quantity [1897] 8 The Philosophy of Matter [1897] 9 On the Conception of Matter in Mixed Mathematics [1897] 10 Motion in a Plenum [1897] 11 Why Do We Regard Time, But Not Space, as Necessarily a Plenum? [1897] 12 Review of Love, Theoretical Mechanics [1898]13 On Causality as Used in Dynamics [1898] 14 Review of Goblot, Essai sur la classification des sciences [1898] 15 On Quantity and Allied Conceptions [1898] 16 The Classification of Relations [1899] 17 Review of Meinong, Ueber die Bedeutung des Weber'schen Gesetzes [1899] PART II: AN ANALYSIS OF MATHEMATICAL REASONING (1898) 18 An Analysis of Mathematical Reasoning Being an Inquiry into the Subject-Matter, the Fundamental Conceptions, and the Necessary Postulates of Mathematics [1898] a Manuscript Material PART III: PHILOSOPHY OF MATHEMATICS (1898-99) 19 On the Principles of Arithmetic [1898) 20 The Fundamental Ideas and Axioms of Mathematics [1899) PART IV: GEOMETRY (1898-99) PART IV: GEOMETRY (1898-99) 21 On the Constituents of Space and Their Mutual Relations [ 1898) 22 Are Euclid's Axioms Empirical? [1898] 23 Note on Order [1898) 24 Notes on Geometry [ 1899]