Book digitized by Google and uploaded to the Internet Archive by user tpb. xi, 553 pages ; 25 cm Includes index Science and hypothesis -- The value of science -- Science and method Henri Poincaré -- Author's preface to the translation -- Science and hypothesis. Introduction by Royce -- Introduction -- Part I. Number and magnitude. On the nature of mathematical reasoning -- Part II. Space. The non-Euclidean geometrics ; Space and geometry ; Experience and geometry -- Part II. Force. The classic mechanics ; Relative motion and absolute motion ; Energy and thermodynamics -- Part IV. Nature. Hypothesis in physics ; The theories of modern physics ; The calculus of probabilities ; Optics and electricity ; Electrodynamics -- The value of science. Translator's introduction -- Does the scientist create science? -- The mind dispelling optical illusions -- Euclid not necessary -- Without hypothesis, no science -- What outcome? -- Introduction -- Part I. The mathematical sciences. Intuition and logic in mathematics ; The measure of time ; The notion of space ; Space and its three dimensions -- Part II. The physical sciences. Analysis and physics ; Astronomy ; The history of mathematical physics ; The present crisis of mathematical physics ; The future of mathematical physics -- Part III. The objective value of science. Is science artificial? ; Science and reality -- Science and method. Introduction -- Book I. Science and the scientist. The choice of facts ; The future of mathematics ; Mathematical creation ; Chance -- Book II. Mathematical reasoning. The relativity of space ; Mathematical definitions and teaching ; Mathematics and logic ; The new logics ; The latest efforts of the logisticians -- Book III. The new mechanics. Mechanics and radium ; Mechanics and optics ; The new mechanics and astronomy -- Book IV. Astronomic science. The Milky way and the theory of gases ; French geodesy -- General conclusions -- Index committed to retain 20170930