208 Proceedings of the Royal Physical Society. 



3. Newer Paleozoic and Mesozoic Border (Randgesteine). 



d. Coal Measures ; e. Permian ; e^. Zechstein ; /. Trias ; g. Jura; 

 h. Cretaceous. 



4. Tertiary and Pleistocene Deposits. 



i. Oligocene (Brown Coal) ; k. Drift and Loss. 



5. Massive Rocks of the Harz. 



a. Pregranitic; h. Granitic; c. Postgranitic. 



6. Metamorphic Rocks. 



a. Contact; h. Regional. 



7. Metalliferous Deposits. 



a. Contemporaneous; h. Subsequent. 



IV. GEOLOGICAL STRUCTURE AND HISTORY OF THE HARZ. 



1. Older Paleozoic Period. 



2. Paleozoic Volcanic Action. 



a. Interbedded ; h. Intrusive Diabases. 



3. First Upheaval of the Harz. 



4. Irruption of the Granite. 



5. Denudation of the Ancient Harz. 



6. Newer Paleozoic Period. 



7. Mesozoic Submergence. 



8. Final Upheaval of the Harz and Kyffhauser. 



a. The Great Faults ; h. Character of Upheaval. 



9. Denudation and Age of the Modern Harz. 

 10. Recapitulation. 



V. APPENDIX. 



a. Literature on the Harz. b. Explanation of Plates. 



I. INTEODUCTIOK 



The fame of the ancient metal mines, the many difficult 

 problems connected with the geological structure of the 

 range, and the fascinating beauty of the romantic valleys and 

 vast billowy expanses of sombre pine and bosky beech — all 

 have invested the Harz Mountains with the deepest interest, 

 and made them a centre of attraction to travellers from 

 many lands. 



Few countries can boast of such a magnificent natural 

 " Museum of Practical Geology " as our kinsmen of Deutsch- 

 land possess in their " Harzgebirge," and the descriptive 

 catalogues of its contents have, under their exhaustive 

 methods of research, continued to expand and develop since 

 von Terebra, in 1785, gave to the world his " Erfahrungen 



