AUSTRALASIAN WEATHER 8 1 



whole area dependent on that circulation, and 

 more especially in India. It has also been 

 indicated that these variations which accompany, 

 and are probably the result in part of abnormal 

 temperature (and hence pressure) conditions in 

 the Indian Ocean and Indian monsoon area, 

 may be in part due to conditions in the Ant- 

 arctic Ocean, which also determine the compara- 

 tive prevalence or absence of icebergs in the 

 northern portions of the Antarctic Ocean.' ' 



N. and W. J. S. Lockyer, op. cit., pp. 422-423. 



CHAPTER II.- ICEBERG IRRUPTIONS IN THE 

 SOUTHERN OCEAN. 



That great periodic changes do take place in 

 the Southern Ocean is shown by the distribution 

 of the Antarctic ice. In some years the ice- 

 bergs drift into comparatively low latitudes, and 

 are a serious danger to shipping.* In 1892 

 one group of icebergs floated along the eastern 

 coast of New Zealand, almost as far as Cook 

 Strait. Three years later, one iceberg in the 

 South Atlantic, in April, 1894, actually got 

 within sight of the tropics (it was seen in latitude 



*The movements of the ice are best recorded in Towson's paper 

 published by the Hoard of Trade, in 1858, of which I have not been 

 able to find a copy in Victoria. Dinklage, Ann Hydrogr., Berlin, 

 1893, also 1894, 1897 and 1898. H. C. Russell, Icebergs in the 

 Southern Ocean, Proc. Royal Soc. N.S. Wales, vol. xxix., 1895, PP- 

 286-315 pi. xii. Part II., ibid vol. xxxi., 1897, pp. 221-251. 



