CONTENTS. 



CHAPTER XIII. 



THE OOLITIC GROUP. Geographical distribution, 409 ; subdivisions and foreign equi- 

 valents, 410 ; stages, character, and localities, 410 ; in France, 412 ; fossils, 412 ; 

 coal of the oolite, 416 ; EXERCISES on the oolitic group, 416. 



CHAPTER XIV. 



THE LIAS. Peculiar aspect and geographical distribution, 417,418 ; divisions, 418 ; 

 fauna, 419 ; reptiles, 422 ; the ichthyosaurus, 422 ; the plesiosaurus, 423 ; origin 

 of the oolite and lias, 423 ; EXERCISES on the lias formation, 425. 



CHAPTER XV. 



-:, r3?Bl4JiJplt, NEW RED SANDSTONE GROUP. Position and geographical distribution, 426 ; 



* ftKfe-salt and brine-springs, 427 ; organic remains of the upper new red sand- 

 stojie^ -429 ; fossil footmarks, 429 ; magnesian limestone, 431 ; the Permian 



- - groiip, 431 ; organic remains, 432 ; EXEKCISES on the triasic and Permian 



groups,- 433. 



CHAPTER XVI. 



THE, .CARBONIFEROUS GROUP. General arrangement of the British coal-fields, 434 ; 

 igneous .rocks, 436 ; vegetable origin of coal, 436; experiments of Gbppert, 437 ; 

 mode of deposit of coal, 438 ; objections to the drift theory, 438 ; alternation with 

 .marine deposits, 442 ; supposed nature of the vegetation that has produced the 

 * r 'l V. ' c ^ ^ e ^> ^> erect fossil trees, 443; EXERCISES on the carboniferous group, 

 445. 



CHAPTER XVII. 



THE MOUNTAIN LIMESTONE. The name inappropriate, 446 ; geographical distribution, 

 446 ; mineral productions, 446 ; organic remains, 447 ; caverns, 448 ; EXERCISES 

 on the carboniferous or mountain limestone group, 449. 



CHAPTER XVIII. 



THE DEVONIAN GROUP. Subdivisions, 450; identity of the old red sandstone of Here- 

 ford and Devon, 452 ; fossil fishes, 453 ; EXERCISES on the Devonian group, 454. 



CHAPTER XIX. 



THE SILURIAN GROUP. Geographical distribution, 455 ; upper Silurian rocks, 456 ; 

 lower Silurian rocks, 457 ; Cambrian group, 458 ; Cumbrian group, 459 ; fossils, 

 459 ; EXERCISES on the Silurian and Cambrian groups, 460. 



CHAPTER XX. 



THE METAMORPHIC AND PLUTONIC ROCKS. Metamorphic rocks, 461 ; mica-schist sys- 

 tem, 461 ; gneiss system, 461 ; Plutonic, or melted rocks, 463 ; theory of their 

 formation, 465. 



DIRECTIONS FOR COLLECTING SPECIMENS OF GEOLOGY AND MINERALOGY FOR THE 

 BRITISH MUSEUM, by C. KONIG, Esq., Keeper of the Mineralogical Department, 467. 



SUPPLEMENTARY INSTRUCTIONS ON THE PRESERVATION OF FOSSILS, 476. 

 GLOSSARY OF SCIENTIFIC TERMS USED IN THE WORK, 477. 



