On the 11th, at three o'clock in the afternoon, we crossed the equator in the longitude of 32° 14' W. We had fresh gales at E.S.E., blowing in squalls, attended by showers of rain, that continued at certain intervals, till noon the next day, after which we had twenty-four hours fair weather.
At noon on the 13th, being in the latitude of 3° 49' N., longitude 31° 47' W., the wind became variable, between the N.E. and S.; and we had light airs and squalls by turns, attended by hard showers of rain, and for the most part dark gloomy weather, which continued till the evening of the 15th, when, in the latitude of 5° 47' N., longitude 31° W., we had three calm days, in which time we did not advance above ten or twelve leagues to the north. We had fair weather and rain by turns; the sky, for the most part, being obscured, and sometimes by heavy dense clouds which broke in excessive hard showers.
At seven o'clock in the evening on the 18th, the calm was succeeded by a breeze at east, which the next day increasing and veering to and fixing at N.E., we stretched to N.W. with our tacks on board. We made no doubt that we had now got the N.E. trade-wind, as it was attended with fair weather, except now and then some light showers of rain; and as we advanced to the north the wind increased, and blew a fresh top-gallant gale.
On the 21st, I ordered the still to be fitted to the largest copper, which held about sixty-four gallons. The fire was lighted at four o'clock in the morning, and at six the still began to run. It was continued till six o'clock in the evening; in which time we obtained thirty-two gallons of fresh water, at the expence of one bushel and a half of coals; which was about three-fourths of a bushel more than was necessary to have boiled the ship's company's victuals only; but the expence of fuel was no object with me. The victuals were dressed in the small copper, the other being applied wholly to the still; and every method was made use of to obtain from it the greatest quantity of fresh water possible; as this was my sole motive for setting it to work. The mercury in the thermometer at noon was eighty-four and a half, and higher it is seldom found at sea. Had it been lower, more water, under the same circumstances, would undoubtedly have been produced; for the colder the air is, the cooler you can keep the still, which will condense the steam the faster. Upon the whole, this is an useful invention; but I would advise no man to trust wholly to it. For although you may, provided you have plenty of fuel and good coppers, obtain as much water as will support life, you cannot, with all your efforts, obtain sufficient to support health, in hot climates especially, where it is the most wanting: For I am well convinced, that nothing contributes more to the health of seamen, than having plenty of water.