...

433 156 S. 40 59 W. .20
281 171 S. 9 32 W. 1.25
504 91 N. 13 58 E. .12
551 114 N. 84 36 W. 14
S. 46 6 W. .094

S. 78 22 W. .39 West .30 S. 74 55 W..56 S. 78 48 W..44 588 156 S. 58 25 W..26 386 171 S. 30 24 W..23 594 91 N. 27 21 W..10 684 114 S. 84 19 W. .24 S. 66 32 W..17

1 F. H. Harleston, Prof. J. B. White, Capt. C. C. Tew, E. II. Barton, M.D., and Supt. Arsenal Academy. 2 From this table we obtain the following summary of results:—

No. of obStations in 1854, '55, '56 & '57.4 M'n vel. in No. of 145. Aggregate number of ob- 144. Surface winds at Smithsonian servations at all stations.

2 preceding Motion combined. of clouds.

Surface
winds. miles p.h'r.

miles.

servations.

Time of

the year.

RELATIVE PREVALENCE OF WINDS FROM THE DIFFERENT

POINTS OF THE COMPASS.

North.

tween N. & E. N. E. or be

East.

S. E. or be

tween S. & E.

tween S. & W.

S. W. or be

West.

N. W. or be

tween N. & W.

variable.

Calm or

Direction

of

resultant.

Ratio of resultant

to sum of winds.

1 Prof. L. R. Gibbes, Dr. Joseph Johnson, J. L. Dawson, M.D., and G. S. Pelzer, M.D. 2 Capt. C. R. Suter.

From the preceding tables we obtain the following summary of results:

S. 26° W. .09

1 E. .25

N. 34 E. .21

N. 31 W. .17

Monsoon influences.

Direction.

Force.

150. Ceutre Signal Station.1

64 N. 52° 17′ W. .15 304 5 S. 72 16 W..16

313 48 124 108 S. 82 29 W. .38

531 54 160

August
September 165
October
November 24
December 0

Spring 348
Summer 318
Autumn 213
Winter 291
The year 1171

3 310 19
293 921 185
192 1086 294
48 653
105 1065) 61

675 111 3083121

418) 94 74 21

107 0 103

5413 101 180 169
128 26 62 24
303 26 93 16

631 117 235 69

638 3726541 1028235 1782295 591 142 1604 2703570 278 S. 45 48 W..20

RELATIVE PREVALENCE OF WINDS FROM THE
DIFFERENT POINTS OF THE COMPASS.

156 24 26
51 36 24
132 36 24

56 40 37 0 48 2 24 24

41

39 12
12
54 0 30

45 S. 38 22 W..30 24 S. 34 20 W..55 0 S. 9 43 W..43

57 24

24

192 2 63

28

0

S. 25 14 E. .44

S. 20 54 E. .16 (N. 59 49 E. .30 16 N. 17 49 W..18

S. 89 29 W..29

Ratio of resultant

to sum of winds.

Mean velocity.

At Funchal, Madeira, during the years 1826, 1827, and 1828; also six years, 1865 to 1870.
At sea, for an aggregate period of nearly eleven years and nine months, the observations being
collected and classified, from the logs of numerous sailing vessels, at the United States Naval
Observatory, under the direction of Capt. M. F. Maury, superintendent.

Spring
Summer

Autumn
Winter
The year!
Spring
Summer

...

Autumn

Winter

38 71 17 35 29 43 36 71 44 84 30 71 24 51 34 62 25 S. 43° 20′ W. .76 S. 42 W.
9 19 3 12 5 24 28 38 30 69 28, 26 2 8 4 16 6 S. 2 49 W. .41 S. 11 E.
19 44 16 34 12 20 11 13 13 27 17 28 9 18 24 43 20 N. 4 19 W. .16 N. 17 E.
19 30 11 24 8 27 12 28 11 58 27 39 20 86 27 40 13 N. 85 27 W. .24
S. 49 4 W. .11
40 88 41 71 20 89 46 112 45 128 76 76 55 115 46 65 48 S. 40 1 W. .11
14 18 19 27 14 40 28 41 37 111 41 54 15 19 7 33, 18 S. 13 33 W. .31 S. 5 E.
20 36 29 30 8 22 11 26 10 45 14 23 7 26 17 32 25 N. 9 30 E. .07 N. 30 E.
19 23 9 10 10 33 11 37 30 33 20 51 38 52 23 24 12 S. 67

N. 61 W.

N. 45 E.

56 W..24 | N. 82 W.

3 15 12 23

8 13 15 26 25 22 10 16 12

7 5 8 18

7 36 16 34 18 33 16 15

8 9 10 19

23 28 22 46 14 26 6 24 16

12 20 13 14 5 6 6 6 3 7 2 5 6 7

Winter
The year!
Spring
Summer
Autumn
Winter
The yearl

March
April

6 10 15 22

3 12 2 5

Spring
Summer
Autumn
Winter
The year!
S. 41 50 E. .16
January
18 39 15 36 15 28
21 S. 80 10 W. .16
February 13 34 12 12 7 21 4 30 32 68 19 44 33 74 22 39 13 S. 79 16 W..30
28 56 25 40 16 49 43 57 28 97 52 97 42 111 45 59 23 S. 73 19 W. .21
34 88 43 48 29 62 30 104 53 125 48 68 57 89 39 76 37 S. 49 3 W. .11
32 80 35 85 26 89 40 92 50 71 42 59 22 34 23 50 32 S. 62 43 E.
14 19 14 21 11 21 26 54 47 69 32 56 17 26 13 29 39 S. 22 27 W.
July
11 31 24 45 25 78 41 49 49 154 50 44 10 20 9 24 19 S. 8 41 E.
August 22 43 13 37 20 38 35 50 24 77: 42 53 11 11 4' 38 27 S. 7 11 E.
September 17 46 29 43 14 37 31 50 6 41 15 28 9 19 9 34 43 S. 49 8 E.
October 25 49 45 57 49 59 34 45 30 43 13 28 19 43 23 33 24 N. 85 7 E. .18 N. 65 17 E..26
November 26 30 20 52 19 37 18 44 19 51 22 72 31 49 31 46 25 S. 84 32 W. .10 N. 63 46 W..09
December 26 24 13 17 7 39 10 23 14 25 28 60, 48 78 24 37 23 N. 81 21 W. .29 N. 59 4 W..27
S. 31 35 W. .11
14 2 17 22 S. 26 30 E.
9 17 14 16 32 S. 36 7 E.
9 S. 63 55 E.

5 25 13 13

5 8

5

10

3 S. 73 2 W. .32
S. 0 32 W. .07
1 N. 80 57 E. .12

S. 85 W.

N. 56 E.

6 10

6 6

15 15 5 15

OS. 15 56 W.
9 S. 53 27 E.

255

109

123

100

647

387

179

127

145

838

114

84

61

65

324

32

51

79

41

203

54