WINDS OP THE NORTHERN HEMISPHERE. H 



Series F is deduced from Series E, and shows the effect of combining the element 

 of force with that of time, in computing the mean direction of the wind. A mere 

 full and particular description of the process is given in the Introduction to the 

 series, further on. 



That no errors have been committed in reducing so great a mass of observations, 

 and making the numerous calculations growing out of them, is more than I dare 

 to assert. I can only hope that they are not so serious as materially to affect the 

 general results. 



