24 Hon. Ralph Abercromby. Relation between 



equator circulate on an opposite system to those in the northern 

 hemisphere, and it is certain that a hurricane generated south of the 

 line conld not coalesce with one developed north of the equator. 



All accounts agree that cirrus is seen all round a typhoon in Japan 

 as at Manila, and that rain extends much further in front than in 

 rear of the centre, as in higher latitudes. In some typhoons the 

 development of squalls is far greater in front than in rear of the 

 trough ; and this is the opposite of what is found in England. 



Lightning is sometimes seen in front of the centre of a typhoon, 

 but apparently rarely in the true storm field. 



Cirrus clond is observed over the blue of the " bull's-eye," and 

 Mr. Knipping informed the author that the clear central spot is not 

 seen in quick-moving cyclones, while it is a very marked phenomenon 

 of those whose progress is slow. This is a most important obser- 

 vation. 



The " bull's-eye " and the centre of the wind's rotation do not 

 appear to be always coincident with the barometric centre of the 

 cyclone ; but there are not enough land observations to enable the 

 author to do more than note this point. 



There are certainly traces of trough phenomena, though not 

 strongly defined. Mr. Wada told the author that the clouds some- 

 times brighten a little about the passage of the trough, and then 

 become dark again ; but he had never noticed a line of squalls along 

 the line of the trough. 



Temperature is usually higher in front and lower in rear of 



Fig. 11. 



