WINDS. 



161 



These experiments, which require great care in the arrange- 

 ments, can only be made satisfactorily in open ground. They 

 confirm the general view already presented, though the differ- 

 ences are less. 



WINDS. 



The wind, itself originating in the inequality of temperature, 

 which is derived from solar action on the unequal surface of 

 land and water, is one of the principal determining elements 

 of local climate and weather. The wind, if it blows long 

 from the cold quarter, may bring the chill of winter over the 

 roses of July ; if it set in long from the warmer quarter, the 

 lassitude of summer may surprise us even in January. The 

 powerful influence of wind on temperature is very manifest, in 

 every trustworthy set of observations. The relative prevalence 

 of winds at York will be seen in the following summary of ten 

 years' daily observations (1800 to 1809). 



On considering this table with attention, we perceive a decided 

 superiority of westerly over easterly winds. Of the eight points 

 here tabulated, the S.W. is that from which the wind most fre- 

 quently blows ; and this is the most prevalent wind in seven out 



M 



