Time of the year.

From observations 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.

RELATIVE PREVALENCE OF WINDS FROM THE DIFFERENT POINTS OF

THE COMPASS.

Monsoon

influences.

Number of days.

Monsoon

influences.

Force.

Computed from observations made by Messrs. M. A. Schmitz and Hartefield, during the years 1850 to 1854 inclusive.

From observations for an aggregate period of nearly 5 years, 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.

49. Longitude 125° to

135° E.

50. Longitude

145° to

160° E. 51. Longitude

145° to 170° E. 52. Longitude

160° to

170° E.

53. Longitude 170° to

175° E.

Spring
75 14 17 32 16'
Summer 3
6 2 12
Autumn 10. Ο 5 1 10
Winter 173 65 65 9. 33
The year!

8 17 17 19 7 8 14 20 18 47
5 50 66 53 24 28

9 14

22 25 30 9 11

3 23

6 20 6 14 12 28 19 82 52 156 52

2642

37 37 N.

7° 51' W. .30 N. 2° W..27

134

5

3 40 S.

6 54 E. .56 S. 11 E. .57

109

3

5

3 S.

2 56 W. .39 S. 1 E. .42 56 56 N. 23 0 W. .50

...

N. 20 W..46

283

N. 51 38 W. .04

582

40

43

:

:

...

0 23 N. 69 0 E.

.62

N. 28 E. .11

55

0 12 N. 77 10 E.

.57

S. 87

E. .03

55

Addendum to Zone 19.

Observations on the Indian Ocean, calculated at the Meteorological Institute of the Netherlands, under Capt. Cornelissen's direction.

The data for the study of the winds of this zone consist of observations made at 4 stations on land, for an aggregate period of 9 years 10 months; and at sea for over 60 years 6 months. The distribution is as follows:

(Nos. 1 to 14.)

Pacific Ocean, east of longitude 180°.

From observations for an aggregate period of over 15 years, collected and classified, from the logs of numerous sailing vessels, at the United States Naval Observatory, under the direction of Captain M. F. Maury, Superintendent.

S. E.

S. S. E.

South.

S. S. W.

S. W.

W. S. W.

West.

W. N. W.

N. W.

N. N. W.

Calm or

East.

E. S. E.

.74

*d[q®JIVA

(G≈outdoone Number of days.

4 12 N. 75° 10' E.
1 N. 73 43 E.??
0 24 N. 80 46 E.
0 N. 63 44 E.
N. 73 8 E.
13 S. 86 39 E. .69 S. 62 W..04
0 S. 80 15 E.? .73 S. 7 W..10
O N. 76 57 E.? .78 N. 8 E. .20
6 13 S. 81 25 E. .76 S. 14 E. .09 200
S. 88 2 E. .73

4 N. 85 29 E.? .75 N. 3 W..23
0 S. 55 57 E.? .88 S. 5 W..33
0 S. 72 18 E.?
0.S. 88 O E.

862

S. 47 W..07

20

N. 34 E. .17

171

N. 36 E. .04

0 S. 55 43 E.

.94

56

From observations for an aggregate period of over 12 years, 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.