135 
“Note on the Relative Velocities of different Winds, at 
Southport, and Eccles, near Manchester,” by Joseph Baxen- 
dell, F.R.A.S. 
In November last Mr. Mackereth, F.R.A.S., had an ane- 
mometer mounted at his observatory, Eccles, by Mr. Dancer, 
precisely similar in construction to that mounted at the 
Southport Meteorological Observatory. Regular observa- 
tions were commenced with it on the 19th of that month, 
and as Mr. Mackereth has kindly furnished me with copies 
of his results to the 17th of February instant, I have thought 
it might be interesting to compare them with the results of 
the observations taken at the Southport Observatory. 
During the 90 days from November 19, 1871, to Feb- 
ruary 17, 1872, the total movement of the wind was 13696-4 
miles at Eccles, and 29843-0 miles at Southport. The ratio 
of the mean velocities was therefore as 1 to 2T7, or for 
every 100 miles at Eccles there was a movement of 217 
miles at Southport. Grouping the daily movements at 
both stations according to the mean daily direction of the 
wind at Eccles, as shown by Mr. Mackereth’s automatic 
anemometer and referred to 16 points of the compass, we 
obtain the following results : — 
Direction 
Total Movement. 
Direction 
Total Movement. 
of Wind. 
Eccles. 
Southport. 
of Wind. 
Eccles. 
Southport. 
N 
665-4 
... 1335-8 
s 
2855-1 
... 5289-4 
N.N.E.... 
311-5 
... 793-1 
S.S.W.... 
3356-7 
... 6099-1 
N.E 
121-0 
... 144-6 
s.w 
1507-2 
... 3154-1 
E.N.E. ... 
310-3 
... 572-1 
W.S.W... 
1473-4 
... 3155-6 
E 
214-0 
... 581.2 
w 
184-0 
... 837-5 
E.S.E. ... 
1105-0 
... 2267-4 
W.N.W. . 
136-5 
... 1184-2 
S.E 
360-4 
... 888-5 
N.W. ... 
72-2 
... 550-8 
S.S.E. ... 
1023-7 
... 2989-6 
N.N.W... 
o-o 
o-o 
Dividing these results into four groups we have : — 
Total Movement of 
Eccles. 
Miles. 
Southport. 
Miles. 
Ratio. 
N., N.N.E., N.E., & E.N.E. Winds.. 
. 1408-2 
2845-6 
1 to 2-02 
K, E.S.E., S.E., & S.S.E. „ .. 
. 2703-1 
6726-7 
1 to 2-48 
S, S.S.W., S.W., & W.S.W. „ .. 
. 9192-4 
17698-2 
1 to 1-92 
W., W.N.W., N.W., & N.N.W „ .. 
. 392-7 
2572-5 
1 to 6 -54 
