CONTENTS 13 



PART III 



ON STATIONARY AND PROGRESSIVE WAVES IN 

 RIVERS 



CHAPTER VII 



PAGE 



The flood- wave of rivers The roll- wave in the Tees In 

 the Ure In the Nikko torrent On the advance of a 

 flood over dry ground . . . . .221 



CHAPTER VIII 



Tidal bores Wave-length of the Severn bore On the 

 want of concordance between height of tide and 

 height of bore, and on the conditions which deter- 

 mine the starting-point of the bore . . . 230 



CHAPTER IX 

 Cinematographing the Severn bore .... 254 



CHAPTER X 



Stationary or standing waves Cross-stream progressive 



waves : observations in Niagara River . . . 265 



CHAPTER XI 



On streams which flow as a series of roll- waves Observa- 

 tions on a conduit from Territet to Glion Observations 

 on the conduit of the Griinnbach (Merlingen,Thunersee) 

 Observations on the conduit of the Guntenbach 

 (Gunten, Thunersee) ..... 294 



CHAPTER XII 



The sounds of running water The gushing motion of 

 cataracts Conical structures produced by the break- 

 up of a waterfall The wave-track of a ship . . 333 



