70 



RECORD AND DISCUSSION 



N. ( imit ) 



In Baffin Bay the calms occur less frequently than any of the eight winds; at Port 

 Kennedy they are more frequent ; the frequency of the calms at Van Rensselaer 



exceeds that at Baffin Bay and Port 

 Fi s- 2< Kennedy in the ratio of nearly 7 



and 5 respectively. 



The preponderance of the N. W. 

 and N. E. winds at Port Kennedy is 

 very striking on the diagram. 



The quantity of air which has been 

 transferred over the place of observa- 

 tion in a given period, is directly 

 proportional to the velocity-numbers, 

 or the number of miles travelled over 

 by a particle of air in any direction 

 during the period. The observations 

 not having all been made at regular 

 and equal intervals of two hours, the 

 numbers indicating the relative quan- 

 tity of air in April, 1858, March and 

 July, 1859, were referred by simple 

 proportion to twelve observations a 

 day, to which all other numbers refer ; the number for all months of six observa- 

 tions a day have been doubled. 



The following table contains the comparative values at Van Eensselaer Harbor 



