362 ON THE METEOROLOGY OF IRELAND. 



Absolute minimum of pressure (= 29*408) at Westport; increase of 

 pressure = 0'13 inch. The velocity of wind uniform, and about 

 30 feet per second. The wind was very light at the preceding and 

 subsequent observations, so that the progressive movement of the 

 vortex cannot be traced. 



June 11, 12. Cyclone crossing the island from S. W. to N. E., 

 with a velocity of about 260 miles per diem. 



June 11, 9 p. M. Centre of the vortex a little to the west of 

 Cahirciveen. Least pressure at Cahirciveen. Mean velocity of 

 wind = 40 feet per second. 



June 12, 9 A. M. Centre over the island, between Kilrush and 

 Westport. Absolute minimum of pressure (= 29 - 347) at Kilrush ; 

 increase of pressure = 0'04 inch. Mean velocity of wind = 25 feet 

 per second. 



June 12, 9 p. M. Centre over the channel, to the east of Kil- 

 lough. Least pressure at Dublin. Mean velocity of wind = 20 

 feet per second. 



July 27, 28. Cyclone traversing the western coast, in direc- 

 tion from S. S. W. to N. N. E. Velocity of wind = 30 feet per 

 second. 



July 27, 9 A. M. Centre of vortex west of Cahirciveen. Least 

 pressure at Cahirciveen. Greatest velocity of wind in south-west. 

 The wind at the north-eastern stations uninfluenced by the vortex. 



July 27, 9 P. M. Centre south of Westport. Absolute mini- 

 mum of pressure (=29'559) atMarkree ; increase of pressure = (HO 

 inch. Velocity of wind uniform. 



July 28, 9 A. M. General current from S. W. ; mean velocity 

 = 30 feet per second. 



August 23, 24. Well-defined cyclone advancing in a curvili- 

 near path, the movement of the centre being at first from N. W. 

 to S.E., and afterwards from S. W. to N.E. 



Aug. 23, 9 p. M. Centre of the vortex north-west of the island. 

 Least pressure at Buncrana. Mean velocity of wind = 25 feet 

 per second. Lightning along the whole of the eastern coast during 

 the day. 



Aug. 24, 9 A. M. Centre near Armagh. Absolute minimum 

 of pressure (= 29 -439) at Armagh ; increase of pressure = 0-13 inch. 



