TIDAL OBSERVATIONS. 



391 



Solar (Decliuational) Diurnal. 



(5) P. 



A=o'376cos {(y — 2»;)/ — 3i6°'35|- 



Lunar Elliptic Semidiurnal. 



(6) L. 



A = o^o8o cos /2(y — ^(T— ^-or)/ — io8°-27l 



