242 MR. T. HEELIS ON THE TEMPERATURE, ETC. 



From the 2']th September the barometer gradually rose, 

 attaining on the morning on the ist October at 9 a.m. a 

 maximum height of 30*420 inches, from which point it fell 

 under the influence of the hurricane which followed. 



So early as the morning of Sunday the 30/A September 

 the hurricane, which ravaged the north of Scotland and 

 the Baltic on the 2nd October and following days, was 

 visible off Scilly as a low bank of grey cloud gradually 

 rising up in the west and north-west. The sun went 

 down behind this, producing an intense scarlet and very 

 wild effects. On the ist October a red sky was noted at 

 sunrise, and the same eloud grew and grew until by the 

 time the ship reached Holyhead it had covered the whole 

 sky, and was flecked over with scud, or what sailors call 

 " water casks." On the evening of this day there was also 

 a wild and red sunset. The barometer had begun to give 

 way as early as noon on the 1st October, and yet the ship- 

 ping on the west of Scotland were, to some extent at least, 

 caught by surprise. 



We had experienced north-east winds all across the 

 Bay, and along part of the coast. These were, I have no 

 doubt, the drafts setting down to fill up part of the com- 

 parative vacuum caused by the progress of the storm. 



