Tuesday, 28th February 1769

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.* 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.

* These are instances of Cook's observation and seaman like perspicacity. The prevailing belief of the
time was in a great southern continent.

Monday, 27th February 1769

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.

Sunday, 26th February 1769

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.

Saturday, 25th February 1769

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.

Friday, 24th February 1769

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.

Thursday, 23rd February 1769

Little wind and Calm, and some Lightning, a thing we have not seen for some time past, and therefore suppose not common in these Seas in high Latitudes. Variation 5 degrees 34 minutes East. Wind North-West, calm; course North 30 degrees East; distance 13 miles; latitude 44 degrees 35 minutes South, longitude 105 degrees 52 minutes West.

Wednesday, 22nd February 1769

Hazey, rainy weather the most part of this Day. Wind North-Westerly; course South 86 degrees West; distance 91 miles; latitude 44 degrees 46 minutes South, longitude 106 degrees 1 minute West.