LIST OF ILLUSTRATIONS 17 



MM 



THE BORE ON THE SHALLOWS OF DENNY ROCK, AND AFTER 



REACHING DEEPER WATER .... 237 



THE NOOSE SANDBANK ..... 243 



CINEMATOGRAPHS OF THE BORE APPROACHING STONEBENCH 255 



CINEMATOGRAPHS OF THE BORE ON REACHING STONEBENCH 259 



BORE VIEWED FROM BEHIND AFTER PASSING STONEBENCH 263 



STATIONARY WAVES CAUSED BY A WEIR ON THE RIVER 



AARE, SWITZERLAND ..... 269 



BIRD'S-EYE VIEW OF WAVES IN WHIRLPOOL RAPIDS, NIAGARA 275 



LEAPING WAVE, WHIRLPOOL RAPIDS, NIAGARA . . 279 



WAVES IN WHIRLPOOL RAPIDS, NIAGARA . . . 285 



WAVES IN A RAPID ON THE ST. LAWRENCE, TAKEN GOING 



DOWN-STREAM IN A STEAMER .... 289 



ROLL-WAVES IN THE GRUNNBACH CONDUIT, LOOKING UP- 

 STREAM ...... . 303 



ROLL-WAVE LEAPING THE OUTFALL OF THE GRUNNBACH 



CONDUIT ...... . 307 



ROLL- WAVES IN THE GRUNNBACH CONDUIT, LOOKING 



DOWN-STREAM . . . . . -315 



OUTFALL OF THE GUNTENBACH AT THE WAVE-TROUGH, AND 



(A FEW SECONDS LATER) AT THE WAVE-CREST . 321 



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