6 CONTENTS. 



PAGH 



THE FORCING POWER OF RAIN, .... 248 



A SHOWER OF SNOW-CRYSTALS, ..... 254 



LONG SHOTS, ....... 256 



INFLUENCE OF MARRIAGE ON THE DEATH-RATE, . . . 262 



THE TOPOGRAPHICAL SURVEY OF INDIA, . . . 269 



A SHIP ATTACKED BY A SwORD-FlSH, . . . .281 



THE SAFETY-LAMP, . . . . . . 284 



THE DUST WE HAVE TO BREATHE, ..... 290 



PHOTOGRAPHIC GHOSTS, ...... 293 



THE OXFORD AND CAMBRIDGE ROWING STYLES, . . . 295 



BETTING ON HORSE-RACES; OR THE STATE OF THE ODDS, . 301 



SQUARING THE CIRCLE, . . . . . .315 



A NEW THEORY OF ACHILLES'S SHIELD, . . . 324 



