CONTENTS. 



Introductory Letter ..... 

 Explanatory and introductory remarks 



Record of tidal observations at Van Rensselaer Harbor, 1853-4 

 Discussion of half-monthly inequality in time and height . 

 Effect of changes of the moon's declination and parallax . 

 Discussiou of the diurnal inequality in height and time . 

 Investigation of the form of the tidal wave 

 Note on the effect of wind on the tides 

 Note on the progress of the tidal wave and depth of the sea 

 Record of soundings ..... 

 Appendix — containing a tidal record at Wolstenholm Sound, Commander Saunders, 1849-50, 

 with four plates .......... 



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