INDEX 



Pteraspes, The, 215 

 Pterichthyds, The, 215 

 Pterodactyls, 242 

 Pterosaurs, The, 255 



Quartzite, 200 



Quaternary Period, The, 199 



Quebec, Collapse of the bridge of, 25 



Rag-stone, 238 



Rain, The influence of, 47 



Rainfall on the British Isles, 128 



Raised Beaches, 151 



Red clay deposit in the ocean, 61 



Red Sandstone Formation, 212 



Reptiles and Amphibians of the Triassic Period, 232 ; of the 



Jurassic Period, 237 



Reptiles in the Carboniferous Period, 229 

 Rhinoceros, The, 265 

 Rhizopods, The, 224 

 Rhaetic beds, 237 



Rivers and Streams in the Silurian Age, 209 

 River Terraces, 55 



Rivers, Work done by, 20; records left by, 50 

 Rocks, how they are made, 79 ; igneous and sedimentary, 



104, 129; "foliated," 200 

 Rocks, Pressure and weight of, 85 

 Roestone, 238 

 Romney Marsh, 60 

 Rorqual, The, 275 

 Royal Commission on Sea Erosion, 19 



Sabre-toothed Cat, The, 273 



304 



