ILLUSTRATIONS 



PAGE 

 THE SKULL, LACKING THE LOWER JAW, OF EOBASILEUS COR- 



NUTU8, COPE 96 



METAMYNODON, Oil SWIMMING RHINOCEROS, FROM SOUTH DA- 

 KOTA . . 101 



HYRACHYUS, OR RUNNING RHINOCEROS, FROM SOUTHERN WYO- 

 MING 103 



PROFESSOR E. D. COPE 106 



PROTOROHIPPUS, THE ANCESTRAL FOUR-TOED HORSE . . . . 110 



PROFESSOR O. C. MARSH . 112 



THE EVOLUTION OF A HORSE'S FOOT AND OF A HORSE'S HEAD 115 

 FOOTPRINTS OF REPTILES FOUND IN CONNECTICUT SAND- 

 STONE . . 118 



TITANOTHERE FROM SOUTH DAKOTA 120 



THE RESULTS OF EROSION BY RUNNING WATER 127 



THE RESULTS OF EROSION BY WIND 181 



A MOUNTAIN CARVED 'FROM HORIZONTAL STRATA 133 



LOUIS JEAN RODOLPH AGASSIZ ) 



ADAM SEDGWICK, F.R.S. .' f 



JAMES DWIGHT DANA ) 



SIR RODERICK IMPEY MURCHISON $ 



WILLIAM SMITH, LL.D 139 



GEORGE POULETTE SCROPE, F.R.S ) 



> 141 

 SIR CHARLES LYELL, BART., F.R S ) 



A LANDSCAPE AND MAMMAL OF THE TERTIARY AGE .... 143 

 A LANDSCAPE AND TERRESTRIAL REPTILE OF THE MUSOZOIC 



TIME 147 



MANHATTAN ISLAND IN THE QUATERNARY AGE THE MASTO- 

 DON ....... 151 



SIR RICHARD OWEN 155 



A METEORIC STONE 159 



CIRRUS CLOUDS 163 



CUMULUS CLOUDS 165 



STRATUS CLOUDS 168 



JEAN BAPTISTE BIOT 178 



LIEUTENANT MATTHEW FONTAINE MAURY . ....... 179 



A WHIRLWIND IN A DUSTY ROAD 188 



WATERSPOUTS IN MID-ATLANTIC .....,,,,,, 18.5 



vi 



