322 Meteorological Obs. 
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 the 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 are of vibration of the vane at the several ob- 
servations. 
FORCE. VARIABLENESS. 
MONTHS. M. 3P.M OA. M: Pp. M. 
March, i79 | 214°} 378 | 488 
April, ° : E200 * | 2.22 46.4 | 57.9%] 
GS Ragan OP 64 O67 51.6 2 
ee a be MO: (1.209, 38.5 43.9 
. 74 2.17 34.1 37.0 
Angust, ‘ 174 |. 1.90 | 422 |. 40.0 
September 69 2.00 42.1 A7.5 
October, 1.93 2.19 38.9 | 43.1 
(November, : 1.87 1.92 33:7 36.7 
December, 217°) 2:25 35.4 38.7°- 
January, ‘ ‘ 2.02. | 2.02 35.9 38.9 | 
ebritaryy:.:: a> ss 2.04 2.31..|.39.9 .| 48.4» 
Meaty): 1.93 2.15 39.7 | 445 | 
- The mean aca of ‘the wind is greatest in winter and spring, 
end geenteine Sth 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 Atheneum for Oct. 3, 1840, 
is given a summary of Mr. Osler’s observations at Birmingham, 
made with his anemometer during the years 1837, 1838, and 
1839: The following is his table, exhibiting the relative wan 
the wind for each hour of the ey distinguishing the seasons.” 
Rae ee iGo ie (4#ys) 6 ey is 
we 6 | bb} 4 67 - 
Summer,, (19. » AT 
putumn, |: 
