620 



PHILOSOPHICAL TRANSACTIONS. 



[anno 1775. 



fc'' ■<''; 



ta.oe 



wind, yet the mean height was greater, in the course of the last year, with the 

 winds which set from that semicircle of the compass, which is intercepted be- 

 tween the points of w. s. w. inclusive, and e. n. e. exclusive, going round by the 

 w. and N. than with the winds which set from the opposite semicircle intercepted 

 between the e. n. e. inclusive, and w. s. w. exclusive, going round by e. and s. 

 In the former semicircle the w. and n. e. give the greatest mean height, and in 

 the latter the s. s. e. and s. w. give the least.* 



TABLE Vlir. 

 For trial of the mcwn's influence. 

 Last qr. New. first qr. Full. 



* It is to be noted, that the means of the whole year, stated in the lowermost horizontal row, are 

 not found by collecting the means of all the months into one sum, and dividing by the number of 

 months (for this method would always be fallacious, except each wind had blown for the same nimiber 

 of days in all the diiferent months) ; but by adding together the heights attending each wind day by 

 day, and dividing the sum by the number of days each wind blew in the whole year.— Orig. 



