CONTENTS. vii 
PAGE 
Cnap. VII. Pacific Ocean, : - : - 2 = 353 
1. General Review of Volcanic Action, - = : pe Bios} 
On Cinder Cones, : - - : = 354 
On Tufa Cones, - - - - - - 3855 
On Lava Cones, - : : - : 355 
Influence of fluidity of Lavas, - E - = 358 
Influence of Fissure Eruptions, — - - - 360 
Solid Centre of Volcanic Mountains, - - - 9864 
Rapidity of formation, - - - - 365 
Conclusions, with remarks on von Buch’s theory of elevation- 
craters, - - - F - - 366 
2. Origin of Lithological Characters of Islands, - - - 3872 
3. Origin of Valleys, - - - - - 379 
4, Changes of Level, - - - - - - 392 
Subsidence indicated by Atolls and Barrier Reefs, - 394 
Elevations of modern eras, - - - - 402 
Changes of level preceding Coral Reefs, - - 412 
5. General arrangement of lands in the Pacific, - - - 414 
6. Origin of the general features of the Pacific and of the Globe, 424 
Cuae. VIII. On New Zealand, - = = 2 = : 437 
Cuap. IX. On New South Wales, = = - = : - 449 
1. Geological formations, A z : 456 
2. Sydney Sandstone formation, - - - - 459 
3. Coal formation, - - = - = = 469 
4. Sandstone strata below the Coal, : = = - 484 
5. Basaltic and allied Rocks, - : - E 495 
6. Circumstances attending the origin of the Deposits, — - - 516 
7. Degradation and Denudation, - - - - 526 
8. Evidences of Change of Level, - - - - 533 
Cuap. X. On the Philippine and Sooloo Islands, — - - - - 539 
Cuap, XI. On Deception Island, - - - : = = ysl 
Cuapv. XII. On Madeira, - = ? : : . 549 
Cuap. XIII. On a part of Chili, 7 S : 5 - - 557 
1. Granitic Rocks and Veins near Valparaiso, - - 561 
2. Greenstone, Basaltic and Porphyritic Rocks, - - - 9579 
3. Sedimentary Rocks, - : - : A 583 
Cuapr. XIV. On the vicinity of Lima, Peru, - = : : - 587 
1. Recent deposits of the coast near Callao and on San Lorenzo, 588 
