BY G. H. HALMGAN. 627 



north and east or in that between east and south, and on 2662 

 occasions from some point either in the quadrant between north 

 and west or in that between west and south. Thus taking all 

 velocities into account, easterly or onshore winds prevailed more 

 frequently than those westerly or offshore in the proportion of 11 

 to 9. 



"If, however, the winds classed as 'light' are omitted, the 

 variation is more marked, the observation being 1500 easterly 

 and only 723 westerly, a proportion of more than 2 to 1. 



"The winds from the two westerly quadrants being offshore 

 need not be further discussed, but with regard to those from the 

 easterly quadrants, examination gives the following results : — 



Number. 



Total observations from between N. and E. ... ... ... 1484 



E. ,, S 1819 



Proportion of northerly to southerly, about 9:11. 



Moderate and strong winds and gales N. to E. ... ... 752 



„ „ E. „ S 748 



Proportion of northerly to southerly, about 1 to 1 . 



Gales only, N. to E 3 



„ E. „ S IS 



Proportion of northerly to southerly, 1 to 6. 



"It may therefore be stated briefly that, although in the totals, 

 onshore winds from the southern quadrant exceed slightly those 

 from the northern quadrant, yet with regard to the winds of 

 higher velocity taken alone, the proportion is equal; and further, 

 that onshore gales from the southward exceed those from the 

 northward in the proportion of 6 to 1." 



Although the information here given is not presented in the 

 same way as that compiled by me from the Sydney Observatory 

 records, the former being the result of personal observation and 

 the latter being automatically recorded by an anemometer, the 

 results are in accord, and some interesting deductions may be 

 made. 



At Clarence River the onshore winds from the north-east 

 quadrant are to those from the south-east quadrant as 9:11; but 

 at Sydney Observatory the proportion is as 1*3: ], and onshore 



