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. 9th 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. 10th 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. 11th 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 18th river; 6 p.m., cold sea-breeze, cloudy and 19th Sept. sky. Altitude of Chingufu, 1,703 feet. Chingufu 12th 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. 13th 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. 14th 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. 15th 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. 16th 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. 17th 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. 18th 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. 19th 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. 20th 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. 22nd 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. 23rd 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. 24th 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. 25th 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. 26th 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. 28th 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°. 29th 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. 30th 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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