Tuesday, 20th. Light Airs and Clear weather. P.M. took several Azimuth, which gave the Variation 16 degrees 30 minutes West. Put the Ship's Company to three Watches. Wind variable; course South 21 degrees 30 minutes West; distance 28 miles; latitude 31 degrees 17 minutes, longitude 17 degrees 19 minutes West; at noon, Funchall, Island of Madeira, North 13 degrees East, 76 miles.
Wednesday, 21st. First part light Airs, remainder fresh Breezes and Clear weather. Served Hooks and Lines to the Ship's Company, and employed them in the day in making Matts, etc., for the Rigging. Wind South-West to South-West by West; course South 60 degrees East; distance 60 miles; latitude 30 degrees 46 minutes North, longitude 16 degrees 8 minutes South; at noon, Funchall North 10 degrees West, 113 miles.
Thursday, 22nd. Genteel breezes and Clear weather. At 4 p.m. saw the Salvages bearing South; at 6, the Body of the Island bore South 1/2 West, distant about 5 leagues. Found the Variation of the Compass by an Azimuth to be 17 degrees 50 minutes West. At 10 the Isles of Salvages bore West by South 1/2 South, distance 2 leagues. I make those Islands to be in latitude 30 degrees 11 minutes South, and South 16 degrees East, 58 leagues from Funchall, Madeira. Wind South-West; course South 35 degrees 30 minutes East; distance 73 miles; latitude 29 degrees 40 minutes North, longitude 15 degrees 31 minutes West; at noon, Funchall North 21 degrees West, 62 leagues.
Friday, 23rd. Light breezes and Clear weather. At 6 a.m. saw the Peak of Teneriff bearing West by South 1/2 South, and the Grand Canaries South 1/2 West. The Variation of the Compass from 17 degrees 22 minutes to 16 degrees 30 minutes, Wind South-West, North-East; course South 26 degrees West; distance 54 miles; latitude 28 degrees 51 minutes North, longitude 15 degrees 50 minutes West; at noon, Funchal North 12 degrees 45 minutes West, 77 leagues.
Saturday, 24th. A fresh Breeze and Clear weather the most part of these 24 Hours. I take this to be the North-East Trade we have now got into. At 6 p.m. the North-East end of the Island of Teneriff West by North, distance 3 or 4 Leagues. Off this North-East point lies some Rocks high above the water. The highest is near the point, and very remarkable. By our run from Yesterday at Noon this end of the Island must lie in the latitude of 28 degrees 27 minutes and South 7 degrees 45 minutes East, distance 83 leagues from Funchal, and South 18 degrees West, 98 miles from the Salvages. At 1 a.m. the Peak of Teneriff bore West-North-West. Found the Variation to be this morning 16 degrees 14 minutes West. The Peak of Teneriff (from which I now take my departure) is a very high Mountain upon the Island of the same name--one of the Canary Islands. Its perpendicular higth from Actual Measurement is said to be 15,396 feet.* (* The received height is 12,180 feet. Latitude 28 degrees 16 minutes North, Longitude 16 degrees 38 minutes West.) It lies in the Latitude of 28 degrees 13 minutes North, and Longitude 16 degrees 32 minutes from Greenwich. Its situation in this respect is allowed to be pretty well determined. Wind North-East by East; latitude 27 degrees 10 minutes North; at noon Peak of Teneriff North 18 degrees 45 minutes, 74 miles.
Sunday, 25th. A Steady Trade Wind and Clear Weather. The Variation by the Amplitude this Evening was 14 degrees 58 minutes West. Wind East by North, East-North-East; course South 41 degrees West; distance 126 miles; latitude 25 degrees 36 minutes North; at noon Peak of Teneriff North 33 degrees 15 minutes East, 61 leagues.
Monday, 26th. Fresh breezes and somewhat Hazey. Variation by this Evening Amplitude 15 degrees 1 minute West. Wind North-East by East; course South 22 degrees 15 minutes West; distance 122 miles; latitude 23 degrees 43 minutes North; at noon Peak of Teneriff North 29 degrees East, 317 miles.
Tuesday, 27th. Ditto weather. Served Wine to the Ship's Company, the Beer being all Expended but 2 Casks, which I intend to keep some time Longer, as the whole has proved very good to the last Cask. At Noon found the Ship by Observation 10 miles a Head of the Log, which I suppose may be owing to a Current setting in the same direction of the Trade Wind. Wind North-East; course South 19 degrees West; distance 145 miles; latitude 21 degrees 26 minutes North; at noon, Peak of Teneriff, North 26 degrees East, 154 leagues.
Wednesday, 28th. A Fresh Trade wind and Hazey weather. The Variation of the Compass by the mean of Several Azimuth taken this Evening 12 degrees 46 minutes, and in the Morning by the same Method 12 degrees 43 minutes West. This day's Log and Observed Latitude agree, which is not reconcilable to Yesterday. Exercised the People at Small Arms. Wind North-East, East-North-East; course South 12 degrees 30 minutes West; distance 150 miles; latitude 18 degrees 59 minutes North; at noon, Peak of Teneriff North 23 degrees 15 minutes East, 204 leagues.
Thursday, 29th. Fresh breezes and Hazey weather. The Variation 12 degrees 33 minutes West; the Observed Latitude ahead of that given by the Log 10 miles. Wind North-East by North; course South 14 degrees West; distance 90 miles; latitude 17 degrees 32 minutes North; at noon Peak of Teneriff, North 33 degrees East, 236 leagues.