From observations for an aggregate period of over 8 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.

Place of observation.

From observations for an aggregate period of over 22 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.

34. Long. 20° to 25° E.

Winter

14 16 816 3 5 4 6 1 19 8 33 13 30 10 15 2 N. 65° 51' W. .31

5 N. 31 55 W..07
0 N. 10 45 W.? .32

8 20 9 30

3 12

4 N. 79 46 W..39

6 N. 14 22 W..34

N. 33 30 W..24

I Computed from the resultants for the seasons.

Hobart Town, by Francis Abbot, at his private observatory, during the years 1857 to 1865 inclusive.

Kent's Group, for a period of five years, 1861 to 1866.

Port Arthur, for a period of five years, 1861 to 1866, and also for an aggregate period of 666 days, by Lempriere, in the years 1837, 1838 and 1839.

66.

Hobart
Town.

June
July

18.55 5.11 3.11 6.11 5.55 8.44

August 17.78 5.11 3.22 10.56 6.33 10.67
September 14.11 5.55 3.11 10.78 7.22 9.67
October 15.11 6.22 5.11 17.45 7.34 8.22
November 11.22 9.67 5.56 19.78 5.33 9.89
December 14.33 5.44 6.89 27.44 7.00 6.33
Spring 47.66 15.55 13.24 40.55 19.01 28.88 23.77 89.99 101.02 N. 45° 23°W.
Summer 53.55 13.55 9.11 20.00 19.10 26.78 23.44 110.33 120.33 N. 44 34 W.
Autumn 40.44 21.44 13.78 48.01 19.89 27.78 23.22 78.11 47.34 N. 47 26 W.
Winter 44.00 17.88 17.22 77.44 21.00 23.22 18.12 50.47 47.46 S. 84 30 E.
The year 185.65 68.42 53.35 186.00 79.00 106.66 88.55 328.90 316.15 N. 42 6 W.

8.78 39.67 45.11

8.44 37.55 39.89

6.22 33.11 35.33

7.33 32.22 22.45
7.89 25.33 15.22
8.00 20.56 9.67
6.89 18.56 12.89

.21

.32

.15

.04

.16

(Nos. 69 to 78.)

Computed from the resultants for the seasons.

Pacific Ocean, west of longitude 180° from Greenwich.

From observations for an aggregate period of over 4 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.

RELATIVE PREVALENCE OF WINDS FROM THE DIFFERENT POINTS OF

THE COMPASS.

Monsoon

influences.

S. S. E.

Ratio of resultant

to sum of winds.

Number of days.