151 



CHAPTER XIll. 



EVIDENCES OF THE TIDAL ACTION DESCRIBED IN 

 CHAPTER X. 



PART I. 



THE MOTION WEST IN THE EQUATORIAL REGIONS AND 

 EAST IN THE TEMPERATE ZONES. 



The action of the forces described iii Chapter X. as 

 tending to give the tide-waves a motion westwards 

 in the equatorial regions and eastwards in the tempe- 

 rate zones, is indicated by the following observations, 

 in a most useful paper, relating to the subject of the 

 tides, by the late Admiral Fitzroy. 



Referring to the times of high water on the days 

 of full and new moon, and giving all the tidal hours 

 in Greenwich time, Admu'al Fitzroy says : ' It is 

 high water at the east side of the Atlantic, from the 

 Canary Islands to Scotland, within an hour or two 

 of the same time, on the salient points of the coast, 

 namely at about 4''.' ^ This clearly accords with the 

 eastward course of the tide- wave throuo-li the tern- 

 perate zone. 



' The Weather Book: a Manual of Practical Meteorology, 

 p. 384. By Rear- Admiral Fitzioy. London, 1863. 



