3^ Meteorological Observations at Hudson, Ohio. 



the absolute progress of the wind is from north to south. The 

 same remarks are applicable to Mr. Redfield's observations at 

 New York city, his results being based solely upon ihQ frequency 

 of the different winds, without regard to their intensity. 



The following table exhibits the mean force and variableness 

 of the wind for the different months, the variableness being 

 measured by the arc of vibration of the vane at the several ob- 

 servations. 



The mean force of the wind is greatest in winter and spring, 

 and greater at 3 P. M. than 9 A. M. As this last is a most im- 

 portant conclusion, it is desirable to know whether it may be 

 safely generalized. In the London Athenaeum for Oct. 3, 1840, 

 is given a summary of Mr. Osier's observations at Birmingham, 

 made with his anemometer during the years 1837, 1838, and 

 1839. The following is his table, exhibiting the relative force of 

 the wind for each hour of the day, distinguishing the seasons. 



