283 



Tide curves: Paragraph 



Typical 48 



Average 304 



Composite 305-306 



Tide gages ,. 212-215 



Tide producing forces 14r-21 



Tropical month and year 35 



Periods and speeds 62 



Tropic ranges, defined 152 



Tropic tides: 



Defined 149 



Mean high and low water of 186 



Types of tides 139-140 



Velocity head 230, 270 



Velocity station, defined ^ 367 



Wave: 



Length 326,327 



Progressive 338-341 



Retrogressive 342 



Stationary 345 



Wind currents 507 



192750 — 40 19 



