Preface. 1. Metamorphism - Metasomatism. 2. Evolution of Metamorphic Concepts Based on the Factors T, P and Stress. 3. Geochemistry - Isochemical Versus Allochemical (Comments on the Hypothesis of Constancy of Bulk Composition). 4. Equilibria - Disequilibria. 5. Stable - Metastable Phases. 6. Prograde Metamorphism. 7. Mineralogical - Petrographical Parameters Determining Geo-Environmental Conditions. 8. On the Extrapolation of Experimental Results to Natural Minerals and Assemblages Formation. 9. Fluids in Metamorphics. 10. Progenitors (Precursors). 11. Neosoma Growths (Crystalloblastesis). 12. Mineral Assemblages - Metamorphic Parageneses. 13. Crystalloblasts Competing for Space. 14. Crystalloblastic Sequence Series (Crystalloblastic Sequence and Evolution). 15. Metamorphic - Metasomatic Symplectites. 16. Relacement Textures. 17. Paracrystalline Growths and Post-, Pre- and Syn Kinematic Growths. Acknowledgements. Illustrations. References. Author Index. Subject Index.