CHAPTER VII.--The History of Mathematical Physics 297 The Physics of Central Forces 297 The Physics of the Principles 299
CHAPTER VIII.--The Present Crisis in Physics 303 The New Crisis 303 Carnot's Principle 303 The Principle of Relativity 305 Newton's Principle 308 Lavoisier's Principle 310 Mayer's Principle 312
CHAPTER IX.--The Future of Mathematical Physics 314 The Principles and Experiment 314 The Rôle of the Analyst 314 Aberration and Astronomy 315 Electrons and Spectra 316 Conventions preceding Experiment 317 Future Mathematical Physics 319
