72 



RECORD AND DISCUSSION 



From the above it appears that the direction of the wind is shifting in spring 

 only direct, in the other seasons it is retrograde; the total amount of angular mo- 

 tion, however, is balanced (within 45°) in the whole year. 



As might have been expected from the peculiar situation of Port Kennedy, and 

 the results as given on Figs. 2 and 3, the rotation of the wind seems to be greatly 

 affected in this locality ; the resulting direction is retrograde, and the amount 

 equals four circumferences. 



The following table contains, 1 for comparison, the results of a similar investigation 

 of the rotation of the winds at Van Rensselaer Harbor, from Dr. Kane's observa- 

 tions in 1853, '54, '55. Seventeen months of observations (hourly) were discussed, 

 and tlu: results, by the same months in different years, were united into one mean : 

 the results lor September, October, November, December, and January, have double 

 weight, for this reason, when compared with the remaining months. 



These results are here published for the first time. 



