When the unhealthy season is past, and the easterly winds have been succeeded by the fresh and salutary breezes which constantly blow for the remainder of the year, health and hilarity again prevail; and a cannon-shot is then fired towards the sea. This ceremony is a notification that the danger has subsided, and it dissipates the fears of the inhabitants. There are, however, two inconveniences, against which they have much difficulty to guard. The first is the bites of thousands of musquitos and locusts, which, though more troublesome and numerous in the rainy season, yet remain to injure the inhabitants after it has passed. I discovered the means of preserving myself from their attacks, at least during the night. I caused Spanish curtains to be made for my bed, which are formed of Italian gauze, sewed together all over, and closing round by means of groves, which prevented these insects from getting in; and thus I slept in peace. The other inconvenience, which is doubtlessly far more serious, is the absolute want of water during eight months in the year: for there is neither spring nor fountain in the island; and the river is saline from December to the end of July. The rest of the year being the time when the waters swell, the rapidity of their course prevents the tide from coming up high enough to spoil that part of the river in which the island is situated, and the inhabitants then use it, as it is pleasant and potable. At other times, expedients must be resorted to: they therefore make small holes in the sand, from which they acquire a brackish water, and use it for want of better. They, however, filter it in different ways, which makes it tolerably good. But as these portions would not be sufficient for a supply of the colony, they send boats to the top of the river, whither the sea does not penetrate, and till them with water, which they bring back. These voyages are repeated at different times in the month, according to the necessities of the colony. It may not be unserviceable to give some explanations of the holes which they make in the sand, for the purpose of procuring water: they are not deep, and only give out their water for an instant; in consequence of which it is necessary to renew them in other positions, as often as a fresh supply is requisite. They expose it to the wind in earthen vases, which are not glazed. This water presents a phenomenon of a curious nature: it becomes saline in proportion as that of the river gets fresh; and as soon as the latter resumes its brackish taste, that taken from the holes in the sands is perceptibly sweeter. This double effect of the tide upon the water which is no longer in contact with it, is doubtless worthy of the attention of chemists.