626 SAND-MOVEMENT ON THE NEW SOUTH WALES COAST, 



In the first four columns of the above tables the number of 

 hours in each year the wind blew in each quadrant is shown, and 

 it should be explained that where a wind was recorded as due 

 north, one-half the number of hours it blew were put into the 

 north-west column and the other half into the north-east 

 column; and similarly for the winds recorded due east, south or 

 west. 



The remaining sixteen columns show the number of winds in 

 each year in each quadrant after eliminating all winds of less 

 velocity than eleven miles per hour (a gentle breeze), twenty 

 miles per hour (a strong breeze), and thirty miles per hour 

 (a moderate gale). 



The north-enst wind blows during the greatest number of 

 hours, when all winds are taken into consideration; and they 

 still prevail when all winds below eleven miles per hour (gentle 

 breeze) are eliminated. 



Above twenty miles per hour (fresh breeze) the south-west 

 winds are greatest in numbers, but they are run very close by the 

 south-easters, the proportion being 596 : 579, while there were 

 only 474 north-easters during the same period. 



When all winds below the force of a moderate gale are 

 neglected, we find the south-westerlies strongly in the ascendant, 

 being 19 J times as many as the north-easterlies, 3^ times the 

 north-westerlies, and nearly twice the south-easterlies. 



The winds blowing from the eastern half of the compass are to 

 those from the western half as 1 -09 : 1, but there are twice as 

 many gales from the western half. 



From a report by Sir John Coode to the Secretary for Public 

 Works on the proposed Harbour Works at the Clarence River 

 in 1887, the following observations on " Winds" are extracted: — 



" The following results are given by an examination of the 

 records made by the Pilots at the Clarence Heads, and extracted 

 from their log books for my use by Captain Howard, R.N. 



"Between March, 1877, and August, 1886, 5965 observations 

 were made and recorded; these show that on 3303 occasions the 

 wind was blowing from some point either in the quadrant between 



