The philosophy of science emerged out of a combination of three traditional concerns: the classification of the sciences, methodology, and the Philosophy of Nature. This collection of important works of 19th-century philosophy of science contains contributions in all three of these interrelated areas. It includes: Preliminary Discourse on the Study of Natural Philosophy (1830, John Herschel), Philosophy of the Inductive Sciences (1840, William Whewell), Comte's Philosophy of the Sciences (1853, (George Henry Lewes), Popular Scientific Lectures (1873, Hermann Helmholtz), Matter and Motion (1876, James Clerk Maxwell), Principles of Science (1874, William Stanley Jeavons), Common Sense of the Exact Sciences (1886, William Clifford William), Analysis of Sensations (1886, Ernst Mach), Science and Method (1908, Henri Poincare).