5th November 1768

Between Equator and Rio de Janeiro
Fine pleasant weather. Variation per Azimuth this morning 3 degrees 21 minutes East, which makes me Doubtful of the Variation found yesterday, tho' at the time I had not the least room to doubt of the Accuracy of the Observations. Longitude per Observation 34 degrees 43 minutes 30 seconds West. Wind East to North-East; course South 30 degrees 35 minutes West; distance 109 miles; latitude 18 degrees 22 minutes South, longitude 34 degrees 50 minutes West.

Joseph Banks Journal
The thermometer kept still gradualy falling as the wind got more to the northward, which appears odd as the North wind should now be the warm wind; we were not yet however enough to the Southward to find much alteration. Wind this morn was North-east, at noon North by west, between this place and mid channel it has changd from South by East. The Trade being to the Northward upon this coast has been observd long ago, tho I question whether our navigators are sufficiently apprisd of it. Piso in his Natural history of the Brasils says that the winds along shore are constantly to the Northward from October to March and to the southward from March to October. Dampier also who certainly had as much experience as most men says the same thing, advising ships outward bound to keep to the westward where they are almost certain to find the Trade more Eastward than in mid channel, where it sometimes is due South or within ½ a point of it as we ourselves experienced.

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