The 7th, in the morning, I took on board the sick people, and we made every thing ready, in order to set sail in the evening with the land-breeze. The fresh provisions, and the salubrious air of Boero, had done our sick much good. This stay on shore, though it lasted only six days, brought them so far, that they could be cured on board, or at least prevented from growing worse, by means of the refreshments which we could now give them.
Observations on the monsoons and currents.
It would doubtless have been very desirable for them, and even for the healthy men, to have made a longer stay here; but the end of the eastern monsoon being at hand, pressed us to set sail for Batavia. If the other monsoon was once set in, it became impossible for us to go there; because at that time, besides having the winds contrary to us, we had likewise the currents against us, which follow the direction of the reigning monsoon. It is true, they keep the direction of the preceding monsoon for near a month after it; but the changing of the monsoon, which commonly happens in October, may come a month sooner, as well as a month later. In September there is little wind: in October and November still less; that being the season of calms. The governor of Amboina chooses at this season to go his rounds to all the isles which depend upon his government. June, July, and August, are very rainy. The eastern monsoon generally blows S. S. E. and S. S. W. to the north of Ceram and Boero; in the isles of Amboina and Bandas it blows E. and S. E. The western monsoon blows from W. S. W. and N. W. The month of April is the term when the western winds cease blowing; this is the stormy monsoon, as the easterly one is the rainy monsoon. Captain Clerk told us, that he had in vain cruized before Amboina, in order to enter it, during the whole month of July: he had there suffered continual rains, which had made all his people sick. It was at the same time that we were so well soaked in Port Praslin.
Remarks on the earthquakes.
There had been three earthquakes this year at Boero, almost close after each other, on the 7th of June, the 12th and on the 17th of July. It was the 22d of the same month that we felt one on New Britain. These earthquakes have terrible consequences for navigation in this part of the world. Sometimes they sink known isles and sand-banks, and sometimes they raise some, where there were none before; and we gain nothing by such accidents. Navigation would be much safer, if every thing remained as it is.
We leave Boero.
On the 7th after noon, all our people were on board, and we only waited for the land-breeze, in order to set sail. It was not felt till eight o’clock at night. I immediately sent a boat with a light to anchor at the point of the bank, which lies on the S. E. side, and we began to make every thing ready for setting sail. We had not been misled, when we were informed that the bottom was very good in this anchorage. We made fruitless efforts at the capstan for a long time; at last the voyal broke, and we could only by the help of our winding-tackle get our anchor out of this strong ooze, in which it was buried. We did not get under sail before eleven o’clock. Having doubled the point of the bank, we hoisted in our boats, as the Etoile did hers, and we steered successively N. E. N. E. by N. and N. N. E. in order to go out of the gulph of Cajeli.
Astronomical observations.
During our stay here, M. Verron had made several observations of distances on board; the mean result of which enabled him to determine the longitude of this gulph; and places it 2° 53′ more to the westward than our reckoning, which we had followed after determining the longitude on New Britain. Upon the whole, though we found the true European date current in the Moluccas, from which it was very natural, we had lost a day by going round the world with the sun’s course, yet I shall continue the date of our journals, only mentioning, that instead of Wednesday the 7th, they reckoned Thursday the 8th in India. I shall not correct my date, till I come to the isle of France.