274j Professor Kaemtz on Atmospherical Phenomena. 



in the Atlantic Ocean, in Germany, and in Nova Zembla ; and 

 the NE. was violently driven out of Europe. It was not till 

 December that this latter wind exhibited a tendency to return ; 

 but during the frightful storms of the 18th and 31st Decem- 

 ber, the SW. acquired such predominating power, that dur- 

 ing the next months, the vane hardly indicated an east wind 

 even for a few hours. The very warm and moist January and 

 February of 1834 followed, and not only did the SW. inva- 

 riably bring a warm air, but the cloudiness also interrupted the 

 radiation, while the winter was extremely cold in North Ame- 

 rica. But even at the end of February, a north-east wind be- 

 gan occasionally to blow ; it carried on a conflict with violence 

 against the SW., more especially during the months of March 

 and April, and although the victory for a long time remained 

 undecided, yet the temperature of these months was very much 

 reduced by the cold polar currents, and this was still more the 

 case at the beginning of May, when at length the NE. obtained 

 the mastery. While these east winds brought along with them, 

 at their first appearance, a great degree of cold, yet the rela- 

 tions of temperature were speedily altered when the air became 

 cleared of vapours by their agency ; the sun acted with great 

 power in the clear sky, and the warm summer of 1834 followed. 

 It is true that the SW. attempted several times to force it- 

 self into play, butit found an air which was too dry, and its feeble 

 power did not bring enough of moisture to saturate the atmo- 

 sphere ; the latter was troubled for a few hours, but the clouds 

 were dissipated without any considerable fall of rain. In July, 

 when it acquired more vigour, the NE. always drove it back, 

 and violent gales accompanied this encounter, which was con- 

 tinued from the 20th of July to the end of the month. From 

 the 21st to the 26th July, the line of this contest passed through 

 Germany about N. and S. ; but from the last-mentioned day 

 until the 31st July, the east wind advanced to Ireland, inva- 

 riably accompanied by storms at the point where the two winds 

 met. The phenomenon was repeated in the same manner in 

 August (especially 26th, 28th) and September. Had this pre- 

 valence of east winds continued longer, we should have had to 

 expect a winter which probably would have been more severe 

 than that of 1829-^0; but about the middle of October, vio- 



