282 



Paragraph 



Rotary currents 5, 485-491 



Average curves 505, 506 



Harmonic analysis of 499 



Rotation of earth: 



Effect on tides 33 



On tidal range on opposite shores 457-459 



On wind currents 507 



Seiches 350 



Semidiurnal part of equilibrium tide 38-40 



Semidiurnal type of tide 139, 140 



Sequence of high and low waters- _ _ 151 



Shallow water components 72, 73, 349 



Slack water: 



Defined ; 5 



Time of 492, 500 



Slope, of mean river level in estuary 462 



Slope: 



Surface 218-221 



Relation to primary current 237-248 



Speed of: 



Component, defined 49 



Movements of sun and moon 62 



Tidal components 64-76, 116 



Spring tides: 



Defined 2, 143 



Ordinary 157, 181 



Relation to moons phases 20 



To M2 and So components 143 



Phase age 144 



Mean low and high waters of 181-185, 202 



Staff gage 212-214 



Stationary wave 345 



Stencils, for computing components 87-89 



Storage station, defined 369 



Strait: 



Hydraulic flow in 256 



Prediction of current in 498 



Strength of current: 



Defined 5 



Prediction of 492-504 



. Relation to surface slope 255 



Surface head: 



Defined ^'^9 



Computation, for harmonic fluctuations 238-241 



Computation, in sections of long canal 373 



Surge, due to seiches 350 



Synodic period i 



Defined ^4 



Month 62 



