Page:Voyage in search of La Perouse, volume 1 (Stockdale).djvu/173

] time before we aw the iland of St. Paul, one could hardly perceive any appearance of phophorecence in the waves.

During our paage from the Cape, the thermometer had never indicated lower than 8° below 0, nor higher than 20° above 0. The mercury in the barometer, during the ame period, had never tood higher than 28 inches 7 lines, nor lower than 27 inches 7 lines.

While we were in the track of the variable winds, the currents had et from 10′ to 20′ N.; but whilt we were ailing off the S.W. coat of New Holland, they had et eatward. Thee differences in their direction depend upon the ituation of the lands.

Our tables for rectifying the irregularities of our time-keepers ariing from difference of temperature, extended no farther than 15° of Reaumur's cale, and the balance-bow for our pendulum-clock was only calculated to anwer between 105° and 115°. The latter was contantly above 115°, and the temperature of the atmophere was very often lower than 15° of the thermometer. It was neceary to keep up a degree of temperature, at leat equal to this, in the place where our time-keepers were depoited. A common lamp might have anwered this purpoe; but we