Friday, 24th. First part, Calm; Middle, light breezes; latter, fresh breezes and hazey. P.M. had several Azimuths, all of which gave the Variation less than 4 degrees East, but they were a little doubtful on account of the Rowling of the Ship. What winds we have had this day hath been from the Eastward, and are the first we have had from that Quarter since we left the Latitude 58 degrees 46 minutes. Wind calm, East-North-East and East-South-East; course North 42 degrees 45 minutes West; distance 79 miles: latitude 43 degrees 37 minutes South, longitude 107 degrees 6 minutes West.
Saturday, 25th. First and Middle parts, fresh Gales and Cloudy, with some rain; the Latter, little Wind and Cloudy. Wind South-East by East, South-South-East; course North 48 degrees 30 minutes West; distance 112 miles; latitude 42 degrees 23 minutes South, longitude 109 degrees 0 minutes West.
Sunday, 26th. First part, Calm and light Airs; remainder, very strong gales and Squally, with Showers of rain, which at length brought us under our two Courses, and close-reefed Maintopsail. Wind calm, North-West and West-South-West; course North 26 degrees 15 minutes West; distance 88 miles; latitude 41 degrees 4 minutes South, longitude 109 degrees 52 minutes West.
Monday, 27th. First part, Strong Gales and Cloudy; the remainder, Gentle Breezes and clear weather. P.M. set the topsail one Reef out. A large swell from the South-West. Wind westerly; course North 18 degrees West; distance 85 miles; latitude 39 degrees 43 minutes South, 110 degrees 26 minutes West.
Tuesday, 28th. The former part little wind and fine clear weather; the Air full as warm as in the same Degree of North Latitude at the Correspondent Season of the Year. The South-West swells still keep up, notwithstanding the Gale hath been over about 30 Hours, a proof that there is no land near in that Quarter.* (* These are instances of Cook's observation and seamanlike perspicacity. The prevailing belief of the time was in a great southern continent.) The remainder part of this day fresh breezes and clear. At 9 a.m. took 3 Sets of Observations of the sun and moon in order to find the Longitude of the Ship. Wind West to North-West; course North 13 degrees West; distance 42 miles; latitude 39 degrees 33 minutes 30 seconds South, longitude 110 degrees 38 minutes West.
[March 1769.]
Wednesday, March 1st. First part fresh breezes, the remainder moderate breezes and clear weather. The result of the Forementioned Observations gives 110 degrees 33 minutes West Longitude from Greenwich, and exactly agrees with the Longitude given by the Log from Cape Horn. This Agreement of the two Longitudes after a Run of 660 leagues is surprizing, and much more than could be expected; but, as it is so, it serves to prove, as well as the repeated trials we have made when the weather would permit, that we have had no Current that hath Affected the Ship since we came into these Seas. This must be a great Sign that we have been near no land of any extent, because near land are generally found Currents. It is well known that on the East side of the Continent in the North Sea we meet with Currents above 100 Leagues from the Land, and even in the Middle of the Atlantic Ocean, between Africa and America, are always found Currents; and I can see no reason why Currents should not be found in this Sea, supposing a Continent or lands lay not far West from us, as some have imaggin'd, and if such land was ever seen we cannot be far from it, as we are now 560 leagues West of the Coast of Chili.* (* These are instances of Cook's observation and seamanlike perspicacity. The prevailing belief of the time was in a great southern continent.) Wind West by South; course North 76 degrees West; distance 52 miles; latitude 38 degrees 44 minutes South, longitude 111 degrees 43 minutes West; at noon, Cape Horn South 60 degrees East 660 leagues.
Thursday, 2nd. Former part, fresh gales and hazey, with much rain; the remainder, a Strong fresh gale and pretty clear weather. Wind Westerly; course North by West; distance 87 miles; latitude 37 degrees 16 minutes South, longitude 112 degrees 5 minutes West.
Friday, 3rd. First part, moderate breezes; remainder, calm and clear weather. A.M. employed filling salt Water in the Fore Hold and airing all the Spare Sails. Wind West, calm; course North 17 degrees East; distance 31 miles; latitude 36 degrees 49 minutes South, longitude 111 degrees 34 minutes West.
Saturday, 4th. First part, Calm; remainder, a fine genteel breeze and clear weather. Variation per Azimuth and Amplitude this Evening 2 degrees 26 minutes East. The South-West swell still keeps up, notwithstanding it hath been Calm 24 hours. Wind calm, North-East, North; course North 50 degrees West; distance 58 miles; latitude 36 degrees 12 minutes South, longitude 112 degrees 50 minutes West.