Storms in the Southern Hemisphere, 109 



storms, which were nearly contiguous, but on opposite aides of 



the equator, and revolving in counter directions \ \ { f 



each according to the laws of rotation and progression of its 

 own polar hemisphere." 



Some idea may be formed of the figure described in one of 

 Mr Piddington's charts, of the circuits sailed over by the 

 Charles Heddle, by taking one end of a coil of rope, and open- 

 ing it out upon a deck or floor, in such a manner as to form 

 with the rope five distinct loops. This will also shew the 

 direction in which the brig scudded, as ropes are coiled from 

 left to right. 



Mr Piddington is of opinion, that storms do not always di- 

 late in their progress, but, on the contrary, that they some- 

 times contract ; and that when they contract, the squalls of 

 wind partake of an involute direction, drawing ships which 

 scud nearer and nearer to the voHex. Such an action as this 

 may, he thinks, have drawn the Briton and Runnymede 

 transports towards the same point in their storm in the Bay 

 of Bengal. 



These two transports coming from different points, the one 

 from England, and the other from Australia, encountering 

 the same storm, both became involved in the vortex, and 

 were cast on one of the Andamen Islands, within a few yards 

 of the same spot, and at the same time. — Bermuda Royal 

 Gazette, Sept. 15, 1846. 



On the Erratic Phenomena of Scandinavia^ in reference to M. 

 Durochefs Memoir on that subject. By M, Ch. Martins. 



When M. Durocher published his first memoir on the 

 erratic formation of Scandinavia,* I had the honour of point- 

 ing out to the Society how readily the facts observed by this 

 traveller admit of explanation, by supposing the ancient ex- 

 tension of the glaciers of Sweden and Norway. t It is the 

 same with the present, in which the author is obliged to con- 

 fine himself to the relation of what he has seen, without at- 



* Bulletin de la Soci6te G6ologique, 2d Series, t. iil,, p. 45, 

 t Ibid., p. 102. 



