CONTENTS. 



STRANGE DISCOVERIES RESPECTING THE AURORA . . 1 



THE EARTH A MAGNET 14 



OUR CHIEF TIME-PIECE LOSING TIME 30 



ENCKE THE ASTRONOMER 46 



VENUS ON THE SUN'S FACE 49 



BRITAIN'S COAL CELLARS 72 



THE SECRET OP THE NORTH POLE 97 



Is THE GULP STREAM A MYTH ? 114 



FLOODS IN SWITZERLAND 133 



A GREAT TIDAL WAVE . . 138 



DEEP-SEA DREDGINGS . . 142 



THE TUNNEL THROUGH MONT CENIS 148 



TORNADOES 153 



VESUVIUS iG7 



THE EARTHQUAKE IN PERU 189 



THE GREATEST SEA-WAVE EVER KNOWN . . . . 194 



THE USEFULNESS OP EARTHQUAKES 211 



THE FORCING POWER OP RAIN 225 



A SHOWER OF SNOW-CRYSTALS ...... 230 



LONG SHOTS . 233 



