278
obtained by simply taking the averages of the monthly directions in degrees without regard to force. This is perhaps, everything considered, the best method in this case and the two annual means direc- tions for 1885 in last year's report ought therefore to be altered to E 10° S and E 29° S.
In order to further elucidate the diurnal variation in force and direction of the wind in this region, -a
subject of great importance to the shipping, the mean directions and forces in 1885 at Victoria Peak and South Cape, Formosa, have been calculated. The observations at the latter station are made carefully by the staff of the lighthouse. The observers stand about 150 feet above sea level, but as they are now and then guided in their estimations by the amount of sail carried by such vessels as happen to pass, the figures may be taken to represent the force of the wind at a lower level.
MEAN DIRECTION and FORCE of WIND at VICTORIA PEAK in 1885.
7 a.
•
10 a.
1 p.
4 p.
7 p.
10 P-
Direction Force. Direction Force. Direction Force. Direction Force. Direction Force. Direction Force.
Month.
1885.
January,
E
4.2
E 5° N
4.8
E 1° N
4.1
E 1° N
4.1
E 5° N
4.2
February,
E 10° N
4.6
E 11° N
4.6
E 13° N
4.3
E 18° N
4.2
E 21° N
4.3
E 5° N E 26° N
4.3
4.4
March,
E 13° S
4.3
E 13° S
4.3
E 14° S
4.0
E 16° S
3.9
E 15° S
4.2
E 15° S
4.2
April;
E 27° S
4.4
E 35° S
4.4
E 38° S
4.5
É 38° S
4.3.
E 38° S
4.4
E 43° S
4.5
May,
S 33° E
4.3
S 28° E
4.3
S 29° E
4.4
$ 21° E
4.3
S 22° E
4.4
$ 180 E
4.5
June,
S 8o E
4.6
S 13° E
4.3
S 16° E
4.4
$ 15o E
4.5
S 18° E
4.6
$ 20° E
4.7.
July,
S 30° W
4.4
$ 30° W
4.4
S 28° W
4.4
$ 18° W
4.3
S 19° W
4.5
S 19° W
4.6
August,
$ 18° E
4,3
S 15° E
4.4
$ 17° E
.4.3
$11° E
4.5
$ 14° E
4.6
$ 21° E
4.6
September,
E 11° S
3.9
E 7° S
3.9
E 35° S
4.1
E 32° S
4.0
E 31° S
4.1
E 32° S
4.2
October,
E 12° N
4.6
E 11° N
4.7
E 5° N
4.5
E 1° S
4.4
E 5° N
4.2
E 6° N
4.3
·
November,
E 20° N
4.2
E 18° N
4.3
E 19° N
4.0
E 280 N
3.9
E 18° N
3.9
E 20° N
3.9
December,
E 7° N
4.5
E 6° N
4.5
E 2° N
4.3
E 6° N
4.2
E 8° N
4.3
E 11° N
4.5
Year,......
E 28° S
4.4 E 28° S
4.4 E 31° S
4.3
E 31° S
4.2
E 29° S
4.3
E 28° S
4.4
January, February, March,
-
April,
May,
June,
July, August, ..... September,
MEAN DIRECTION of WIND at SOUTH CAPE, FORMOSA, in 1885.
1885.
3 a.
6 a.
9 a.
Noon.
3 p.
6.p.
9 p.
Midt.
Mean.
N 45° E
N 42o E
N 38° E
E 31° N
N 43° E | N 44° E N 46° E N 44° E N 42o E N 43o E ❘ N 46° E ! N 44° E N 42o E N 52° E N 53° E N 44° EN 44° E N 45o E N 42o E | N 42o E N 40° E N 46° E N 39o E | N 40o E N 40° E E 26° N | E 27° N E 26° NE 9° N E 20° N | E 23° N | E 26° N E 23° N N 9°WN 3°W N16° W N 25° W ❘ N 57° W N 62° W | N 41° W ❘ N 44° W | N 32o W. E 27° NE 7° N E 24° S | E 23° S S W 18° S S E 15° N E 42° S W 4° NW 2° S W 2° N W 20 NW 3°S W 9° SW 2° N│W 7°N W W 9° NW 32° N ❘ W 25° N ❘ W 12° NW 3° S W 4° NW 8° SW 10° N W 10° N N 19° W N 8° W N 6°WN 27° W N 50°W] N43° W N 29° W ❘ N 29° W ] N 26° W N 42° EN 43o E │ N 45° EN 43° EN 48° E N 42o E N 45° EN 43o E | N 44° E N 45° E N 45° E N 45° E N 43o E N 43° E | N 43° EN 44° E N 42o E
N 42° E
N 45° E
N 41° E
N 42o E
N 43° E
N 43o E
N 45° E
N 45° E
N 45° E
N 42o E ❘ N 42o E
N 43° E
N 43o E
October,
November,
December,
Year,
N 24° EN 26° E N 29° EN 27° E N 22o E | N.20° EN 20o E N 22o E ❘ N 26° E
MEAN FORCE of WIND at SOUTH CAPE, FORMOSA, in 1885.
1885.
3 B.
6 2.
9 a.
Noon.
3 P.
6 p.
9 p.
Midt.
Mean.
January,...
3.1
3.2
3.0
2.9
2.6
2.6
2.7
3.0
2.9
February,
March,
April,
May,
June,
July,
August,
September,
4.0
4.0
4.0
3.7
3.4
3.3
3.4
3.7
3.7
3.1.
3.2
3.0
2.8
2.8
2.7
2.8
3.1
2.9
2.8
2.5
2.6
2.5
2.2
2.3
2.3
2.6
2.5
2.6
2.6
2.7
2,8
2.6
2.5
2.1
2.5
2.6
2:3
2.4
2.2
2,2
2.5
2.1
2.0
2.2
2.2
2.8
2.9
2.8
2.8
2.9
'3.0
2.7
2.8
2.8
2.2
2.3
2.5
2.5
2.4
2.2
1.9
2.0
2.2
2.4
2.4
2.4
2.3
2.3
2.3
2.3
2.3
2.3
October,
3.5
3.6
4.1
3.9
3.7
3.6
3.7
3.7
3.7
November,
December,
4.0
3.9
4.4
4.4
4.1
3.8
3.8
4.1
4.1
3.7
3.6
3.7
3.7
3.6
3.5
3.5
3.7
3.6.
Year,.
3.0
3.1
·3.1
3.0
2.9
2.8
2.8
3.0
3.0
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