OF THE WIND AT MANCHESTER. 101 



There is also an increase of rather more than 33 per cent, 

 in S. winds,, as compared with September. 



In November the S.W. wind is the most prevalent, 

 but has fallen to below the amount for September. The 

 least prevalent wind is the 'N., but shows an increase of 

 about 62 per cent, on the preceding month : N.E. winds 

 show an increase of 90 per cent., S.E. winds an increase 

 of 14 per cent., and S. winds a falling off of 25 per cent. 



In December the S.W. wind still prevails the most, 

 and shows an increase of 17 per cent. The least preva- 

 lent wind is the N., but shows an increase of 30 per cent, 

 on the amount for November; N.E. winds show a falling 

 off of about 33 per cent., E. winds a falling off of 12 per 

 cent., S. winds an increase of 35 per cent., W. winds a 

 slight decrease, and N.W. winds an increase of 20 per 

 cent. 



In one of the Tables subjoined, the number of days that 

 each wind has blown in each year have been tabulated, 

 and we find that the S.W. blows upon the largest number 

 of days, viz. 91*5 per year, or on 1190 days in the thirteen 

 years. The N. wind blows upon the least number of days, 

 the average being 16*3, and the total number 212. The 

 order of jfrequency of occurrence of each wind is as follows, 

 commencing with the highest number : — 



S.W 91-5 



N.W 560 



N.E 48-6 



W 42*0 



S. .., 407 



S.E 387 



E 303 



N 16-3 



These figures do not seem to exhibit any uniformity 

 whatever; and, in order to eliminate still further any 



