166 



MR. LUBBOCK ON THE TIDES. 



The Pembroke tides are from 697 observations made between the 1st of Novem- 

 ber 1832 and the 31st of October 1833. Those for the Liverpool Docks are from 

 1402 observations made in the years 1772 and 1791. Those for Howth Harbour are 

 from only 254 observations, made in 1817 between the 16th of June and the 15th of 

 December. Those for Ramsgate Harbour are from 730 observations, made between 

 the 1st of September 1831 and the 31st of August 1833. 



Table showing the Interval between the Moon's Transit and the Time of High Water. 



i 



