Appendix

I.

METEORLOGICAL

Instruments used for altitudes:--

Pocket aneroid, corrected +0.55, "R.G.S"

Casella's Alpine Sympiesometer, corrected to 67° (F.).

N.B.-- Returning to Fernando Po, found that part of the liquid has lodged in upper bulb, and therefore corrected index error by standard aneroid 1.15 (Symp. = 29.258, and standard, 30.400).

Observations at the Congo mouth in February, 1863 (from log of H.M.S. "Griffon").

Thermometer Barometer Winds Place

Engine in sea. Force & Direction

Room. A.M. P.M.

86° 76° 29.90 (1) S.E. (1) N.N.W. Loanda.

92° 77° 29.92 (1) S.W. (2) W.N.W. En route to Congo.

108° 76° 29.90 (1) S. (3) S.S.W. En route to Congo.

86° 78° 29.90 (2) S. (3) W. En route to Congo.

88° 78° 29.90 (2) S.W. (2) S.S.W. En route to Congo.

94° 80° 29.90 (2) S.E. (2) S.W. En route to Congo.

90° 83° 29.90 (2) S. (2-3)S. Congo.

90° 80° 29.90 (0) Calm (1) W. Congo.

(Signed) F. F. Flynne,

Assistant-Surgeon in Charge.

Place and Date. Time of Day. Thermometer. Symp. Remarks.

9^th September 6 a.m. 65° 28.00 cor. 29.12 Cold morning, light wind from N.N.E.,

Banza nokki 9 a.m. 72° 27.70 cor. 28.82 threatened rain, 8 a.m.; noon misty,

on hills above Noon. 78° 27.90 cor. 29.02 day hazy; 3 p.m., sun hot, wind cooler

river 3 p.m. 80.5° 27.85 cor. 28.97 from west; evening, stiff sea-breeze,

6 p.m. 72° 27.90 cor. 29.02 people complain of cold; night, heavy dew.

10^th Sept. 6 a.m. 67° 27.90 cor. 29.02 Misty morning, warm at 9 a.m., wind; noon,

Same place, 9 a.m. 75° 27.75 cor. 28.87 hot sun, high sea-breeze; 3 p.m., hot

Nokki. Noon. 83° 27.85 cor. 28.97 sun, cool west wind; cloudy evening;

3 p.m. 85° 27.75 cor. 28.87 windy night, dew cold and heavy.

6 p.m. 74° 27.85 cor. 28.97

Altitude of Nokki above sea, 1,430 feet.

11^th Sept. 9 a.m. 77° 27.70 cor. 28.82 Misty morning, warm but clouding over;

Banza Noon. 87° 27.55 cor. 28.67 at noon high sea-breeze, glare and hot

Chingufu 3 p.m. 83° 27.45 cor. 28.57 sun, when clouds break 97° in sun,

above Nokki; 6 p.m. 73° 27.50 cor. 28.62 2 p.m.; 3 p.m., high sea-breeze up

see also 18^th river; 6 p.m., cold sea-breeze, cloudy

and 19^th Sept. sky.

Altitude of Chingufu, 1,703 feet.

Chingufu

12^th Sept. 6 a.m. 65° 27.70 cor. 28.82 Clear fine morning; high west wind

First observation Nekolo. at 6 a.m.; pocket aneroid 29.00

Chingufu, 9 a.m. 76° 28.50 cor. 29.62 Shady verandah facing to west; at

others at Nekolo Noon. 84° 28.35 cor. 29.47 noon aneroid 30.05; 3 p.m., hot

lower down & near 3 p.m. 85° 28.40 cor. 29.52 sun, westerly breeze, few clouds;

river. 6 p.m. 77° 28.30 cor. 29.42 6 p.m., very clear, east wind

strong; no dew at night.

Negolo Nkulu.

13^th Sept. 6 a.m. 70° 28.45 cor. 29.57 Close cloudy morning; 9 a.m.,

Negolo and near 9 a.m. 77° 28.50 cor. 29.62 alternately clear and cloudy,

Congo River. Noon. 90° 28.45 cor. 29.57 glare, no wind; noon bright and

sultry, no clouds; 3 p.m., in

shady cove 10 feet above river;

rain at 5.30 p.m., lasted two

hours; dispersed by westerly

breeze.

Cove near river.

3 p.m. 94° 29.10 cor. 30.22

Height of Negolo, 828 feet.

Left bank.

14^th Sept 6 a.m. 74° 29.30 cor. 30.50 Dull, warm, and cloudy.

Right bank.

Banza Vivi on 9 a.m. 84° 29.35 cor. 30.57 Aneroid 30.60, dull day.

hills above right Noon. 80° 28.95 cor. 30.07 Anerodi 30.10 dull day, very little

bank. 3 p.m. 84° 28.35 cor. 29.47 breeze, village shut in, clouds

6 p.m. 79° 28.85 cor. 29.97 from west.

Banza Vivi.

15^th Sept. 6 a.m. 74° 29.15 cor. 30.25 Thick drizzle from west, no wind.

At Banza Simbo, half way up Vivi range, aneroid 29.42.

Banza Nkulu Noon 78° 28.10 cor. 29.22 Under tree facing north; puffs of

above rapids. west wind, threatened rain, none

came.

6 p.m. 75° 28.10 cor. 29.22 In veranda facing north-east; clear

night, heavy dew.

Banza Nkulu.

16^th Sept. 6 a.m. 69° 28.20 cor. 29.32 Grass wet, heavy dew, rain

threatened, aneroid 29.50.

100 feet above rapids.

7.30 a.m. 73° 29.25 cor. 30.37 Aneroid 30.55.

Banza Nkulu again Noon. 80° 28.10 cor. 29.22 Aneroid 29.55, dull, cloudy, rain

threatened.

3 p.m. 75° 28.00 cor. 29.12 Dull day, clearer towards evening,

6 p.m. 75° 28.00 cor. 29.12 very heavy dew.

Altitude of Nkulu, 1212 feet.

Altitude of Yellala Rapids, 390 feet.

Nkulu.

17^th Sept. 5.30 a.m. 67° 28.15 cor. 29.27 Grey, cool; threatens sunny day.

Right bank of river.

9.20 a.m. 77° 29.30 cor. 30.42 Cool west wind.

In canoe on river below Little Rapids.

10.50 a.m. 81° 20.20 cor. 30.32 Aneroid 30.57(59)

Left bank 20 feet above water, under fig-tree facing north.

Noon. 81° 29.20 cor. 30.32 Aneroid 30.50.

Negolo Town 3 p.m. 83° 28.30 cor. 29.42 Day hot, aneroid in verandah 30.50.

Banza Chingufu.

6 p.m. 71° 27.55 cor. 28.67 Clear evening, misty towards night,

young moon with halo.

Height of river below Vivi Fall, 195 feet.

18^th Sept. 6 a.m. 65° 27.60 cor. 28.72 Cool, grey, no wind.

At Chingufu as 9 a.m. 76° 27.65 cor. 28.77 Strong land wind, from east, no

before. sun, heavy clouds N.E.

Noon. 90° 27.50 cor. 28.62 High west wind, hot sun.

3.30 p.m. 88° 27.35 cor. 28.47 Clear at 1 p.m., thermometer 100°

little wind, sun hot.

6 p.m. 77° 27.45 cor. 28.57 Clear evening, no dew, misty moon,

high sea-breeze at night.

19^th Sept. 6 a.m. 67° 27.70 cor. 28.82 Still grey morning, no wind.

At Chingufu. 9.30 a.m. 76° 27.65 cor. 28.77 Lighter, wind from west.

Noon. 81° 27.60 cor. 28.72 Dull, light west wind.

3 p.m. 88° 27.45 cor. 28.57 Cloudy and sunny, west wind.

6 p.m. 72° 27.50 cor. 28.62 Clear, fine, little wind.

How do these agree with September 11?

Chingufu.

20^th Sept. 6 a.m. 69° 27.70 cor. 28.82 Fine, clear, and still morning.

On river.

Down river 9 a.m. 82° 29.35 cor. 30.47 Hot day, aneroid 30.55; at 10 a.m.

29.85.

Off Chacha village on river.

Noon. 87° 29.35 cor. 30.47 Sea-breeze, sun hot, but obscured

by smoke of bush fires.

On river.

3 p.m. 86° 29.20 cor. 30.32 Aneroid 30.40, stiff sea breeze.

Last observation taken about 5 miles above Boma.

21 Sept. 9 a.m. 76° 29.30 cor. 30.42 Cool, cloudy, pleasant.

At Boma. Noon. 81.5° 29.25 cor. 30.37 Dull, threatens rain.

3 p.m. 86° 29.25 cor. 30.37 Dull, muggy, cloudy.

22^nd Sept. 6 a.m. 77° 29.10 cor. 30.22 Dull, cloudy, cool; instrument in

Boma. verandah facing south-west.

9 a.m. 76° 20.30 cor. 30.42

Noon. 84° 29.30 cor. 30.42 Dull and warm.

3 p.m. 84° 29.10 cor. 30.22 Very dull, strong sea-breeze comes

up in afternoon, and lasts till

9 p.m.

6 p.m. 79° 29.20 cor. 30.32 Dull night.

Mean altitude of Boma (commonly called Embomma), 73 feet.

23^rd Sept. 6 a.m. 70.5° 29.20 cor. 30.32 Dull morning

Boma. 9 a.m. 81.75° 29.25 cor. 30.37 Clear and sunny.

3 p.m. 92° 29.10 cor. 30.22 Clear, hot, and sunny.

6 p.m. 79° 29.15 cor. 30.27 High wind, sun.

24^th Sept. 6 a.m. 74° 29.20 cor. 30.32 Cool and clear.

Boma. 9 a.m. 81° 29.30 cor. 30.42 Hot and clear.

12.30 p.m. 93.75° 29.10 cor. 30.22 Hot and clear.

3 p.m. 93.57° 29.05 cor. 30.17 Very strong sea-breeze till late at

night.

6 p.m. 79.5° 29.15 cor. 30.27 Very strong sea-breeze till late at

night.

25^th Sept. 6 a.m. 74° 29.20 cor. 30.32 Dull, no sun, rain threatened.

Noon. 81° 29.20 cor. 30.32

3 p.m. 83° 29.19 cor. 30.31 Aneroid 30.15.

6 p.m. 78° 29.10 cor. 30.22 Dull, no sun, wind subsided at

night.

Porto da Senha at factory.

26^th Sept. 6 a.m. 78° 29.25 cor. 30.37 Aneroid 30.62, day clear.

9 a.m. 76° 29.30 cor. 30.42 Aneroid 30.40, hot sun.

On passage in canoe down river.

Noon. 87° 29.20 cor. 30.32 Aneroid 30.45.

3 p.m. 95.5° 29.00 cor. 30.12 Aneroid 30.52.

Mean altitude of Porto da Lenha, 38 feet.

28^th Sept. 6 a.m. 71.25° 29.15 cor. 30.27 Dry, cloudy morning.

Banana factory, 9 a.m. 75° 29.20 cor. 30.32 Calm, land and sea breezes very

mouth of river, regular.

60 feet above Noon. 81° 29.10 cor. 30.22 At noon thermometer at seaside in

sea level. sun (overcast) 83.5°.

3 p.m. 75.5° 29.05 cor. 30.17

6 p.m. 74° 29.05 cor. 30.17 Symp. (corrected) 30.32°.

29^th Sept. 6 a.m. 73° 29.20 cor. 30.32 Weather calm; at seaside in sun

same place. 9 a.m. 80° 29.20 cor. 30.32 (overcast) thermometer 74.5°.

Noon. 83° 29.10 cor. 30.22

3 p.m. 80° 29.15 cor. 30.27 Symp. (corrected) 30.32°.

6 p.m. 74° 29.05 cor. 30.17 Night cold and windy.

30^th Sept. 6 a.m. 71° 29.20 cor. 30.32 Clear weather, high wind.

same place. 9 a.m. 79° 29.15 cor. 30.27

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