Meteoiiuloiucal Observations. 



131 



London.) The barometer was a Fitzroy. Elevation above sea- 

 level, 100 feet. Distance from Solway, 3 miles. 



Monthly means on average of 15 years : — 



From these tables it appears that the mean annual tempera- 

 ture at Warmanbie durinp: the j^ears specified ranged from 44 dec. 

 in 1879, to 48'5 deg. in 18G8, giving a mean of 4G-8 deg., which 

 is lower than that of Dumfries by nearly 1 deg., a difference which 

 may be partly explained by the greater elevation of the former 

 place, and by the circumstance that the height of the thermometer 

 above the grass was 3 feet, instead of 4 feet, as at Dumfries. The 

 barometrical prepare very nearly corresponds with the Dumfries 

 average. The average rainfall is about two and a half inches in 

 excess of that of Dumfries, 39-483 in., as compared with 3G-86in. 

 It is right to bear in mind, however, that the periods compared 

 are different. There is a considerable variation in the annual 



