At noon the direction of wind currents are between
west an d north, as follows :—
W. ' W.N.W. N.W. ' N.N.W. ' N.
32 per cent. , 11 per cent. 16 per cent. 12 per cent. 13 per cent.
At 3 p .m .
74 per cent.
. W.N.W.
10 per cent.
N.W.
6 per cent.
At 9 p .m . and with stronger force :—
S. S.S.W. ’ S.W. W.S.W. w.
10 per cent. 26 per cent. 21 per cent. 14 per cent. 18 per cent.
He also observed how often the wind blew in such
force as to make the wooden structures of Yivi tremble.*
May, 1882 11 times. December, 1882 2 times.
June „ 17 „ January, 1883 • 6 1
July 13 „ March i f -, ± I
August „ 12 „ April i t - o ,;
September „ 15 „ May i f 9 „
October „ 17 „ June i f •• 8 „
November „ 2 „ July if 4 17 i
The velocity of the wind measured by the anemometer
as recorded by Dr. Danckelman is as follows:
From 2 June to .12 June
12 „ „ 22 „
22 „ „ 2 July
2 July f) 12 „
12 „ I „ 22 i
22 „ „ 1 Aug.
1 Aug. „ 11 „
11 „• „ 21
21 „ „ 31 „
31 „ „ 10 Sept.
145 • 1 miles per day.
146-6
109-4
98-4
142-0
106-0
141-1
183-5
166-4
166-1
* Such strong blasts would scarcely be noticeable on the sea-coast,
which proves how the funnel-shaped gorge or canon collects the gentle
sea-breezes, and draws them up until the wind becomes a strong gale.
WIND OBSERVATIONS.
From 10 Sept. to 20 Sept. . . 152-.2 miles
99 20 „ „ 30 ,, . 192-7
i f 30 „ 10 Oct. . 221-7
i f 10 Oct. „ •2 0 „ . . 225-4
i f 20 1 „ 30 „ . . 159-2
99 30 g, to 9 Nov. . 136-9
i f 9 Nov. „ 1 9 „ • . 114-4
f f 19 „ „ 29 „ . . 90-1
i f 29. „ „ 9 Dec. . 66-6
f f 9 Dec. „ 19 • „ • •• 65-3
f f 19 1 » 29 „ • , . 76-5
f f 29 „ „ -8 Jan. . 116-1
f f 8 Jan. „ 18- „ • . . . 121-6
f f 28 „ „ 7 Feb. . . -85-4
f t 7 Feb. 1 17 1 . . -89-2 ■
f f 17 I „ 27 „ . . -74-9
f f 27 „ „ -9 March . . 85-3
f f 9 Mar. „ 1-9 „ ’ • . 102-4
f t 19 1 „ 29 • „ . •• 95-2
f t 29 1 „ 8 April . . 75-0
At Yivi the strongest winds blow at night, from
south-westerly up the Congo. Between Stanley Pool
and the expansion of the Congo above Chumbiri between
9 a .m . and 4 p .m ., during which time the winds
are strong gales frequently. At night it is calm, and
the native canoes resume their journeys.
Above .the Equator the strongest winds are between
1 p .m . and 3 p :m .
About .rains on the Lower Congo,-Dr. Danckelman
makes thé following observations :— ' *
“ At Vivi the most copious rains fall during thç mpnths of November
and April. In 1882 the rains ceased on the 12th of May, but a small
shower was observed on the 18th of May.' Then' appeared the dry
season, which continued till the 10th of October. A month later
serious rains began on the 10th of November, lasting till the 27th
of November. There was a cessation in the rainfall until the 6th of
December.
“ Between the 27th of December and the 11th of January there was
another dry interval, and between the 29th of January and 16th of
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