AND OTHER WATER WAVES 73 



Captain went twelve hours out of his course in 

 order to partly avoid its fury. Major Darwin made 

 a special effort to judge the distance separating 

 crest from crest of the great rollers, and came 

 to the conclusion that it was three times as great 

 as the ship's length i.e., 1,200 feet. Thus we 

 see that if we compare the wave-lengths, calcu- 

 lated from the velocity of the waves, as observed 

 between the Cape of Good Hope and Australia 

 with those obtained by the same process in the 

 North Atlantic, the Southern Ocean has much the 

 longer waves, and, again, if we compare the eye- 

 estimated length in the Southern Ocean with that 

 in the North Atlantic, the Southern Ocean has 

 also much the longer waves. 



The following observations by Captain Hugh F. 

 David, of the White Star S.S. Corinthic, 1 were made 

 during August, 1907, somewhere between S. 

 Lat. 45 30', E. Long. 61 and S. Lat. 46 45', 

 E. Long. 98 25'. This is between the Island 

 of St. Paul and Kerguelen Island, and about 600 

 geographical miles farther south than the position 

 where Lieutenant Paris made the observations 

 above described. The direction of the wind was 

 westerly, and its greatest force was logged as 9, 



1 Letter to Captain Campbell Hepworth, R.N.R., of the 

 Meteorological Office, and log of the Corinthic. 



