In the evening of the 29th, we observed that luminous appearance of the sea which has been so often mentioned by navigators, and of which such various causes have been assigned; some supposing it to be occasioned by fish, which agitated the water by darting at their prey, some by the putrefaction of fish and other marine animals, some by electricity, and others referring it to a great variety of different causes. It appeared to emit flashes of light exactly resembling those of lightning, only not so considerable, but they were so frequent that sometimes eight or ten were visible almost at the same moment. We were of opinion that they proceeded from some luminous animal, and upon throwing out the casting-net our opinion was confirmed: It brought up a species of the Medusa, which when it came on board had the appearance of metal violently heated, and emitted a white light: With these animals were taken some very small crabs, of three different species, each of which gave as much light as a glow-worm, though the creature was not so large by nine-tenths: Upon examination of these animals, Mr Banks had the satisfaction to find that they were all entirely new.[70]
[Footnote 70: The reader is referred to the account of Captain Krusenstern's circumnavigation, for a very satisfactory relation or an experiment on this subject, which clearly proves the truth of the opinion above stated, as to the cause of the shining appearance so often noticed at sea. It is too long for quotation in this place.--E.]
On Wednesday the 2d of November, about noon, being in the latitude of 10° 38' S. and longitude 32° 18' 43" W. we passed the Line, in which the needle at this time would have pointed due north and south, without any variation: For in the morning, having decreased gradually in its deviation for some days, it was no more than 18' W. and in the afternoon it was 34' east.
On the 6th, being in latitude 19° 8' south, longitude 35° 50' west, the colour of the water was observed to change, upon which we sounded, and found ground at the depth of thirty-two fathoms; the lead was cast three times within about four hours, without a foot difference in the depth or quality of the bottom, which was coral rock, fine sand, and shells; we therefore supposed that we had passed over the tail of the great shoal which is laid down in all our charts by the name of Abrothos, on which Lord Anson struck soundings in his passage outwards: At four the next morning we had no ground with 100 fathom.
As several articles of our stock and provisions now began to fall short, I determined to put into Rio de Janeiro, rather than at any port in Brazil or Falkland's Islands, knowing that it could better supply as with what we wanted, and making no doubt but that we should be well received.
On the 8th, at day-break, we saw the coast of Brazil, and about ten o'clock we brought-to, and spoke with a fishing-boat; the people on board told us that the land which we saw, lay to the southward of Santo Espirito, but belonged to the captainship of that place.
Mr Banks and Dr Solander went on board this vessel; in which they found eleven men, nine of whom were blacks; they all fished with lines, and their fresh cargo, the chief part of which Mr Banks bought, consisted of dolphins, large pelagic scombers of two kinds, sea-bream, and some of the fish which in the West Indies are called Welshmen. Mr Banks had taken Spanish silver with him, which he imagined to be the currency of the continent, but to his great surprise the people asked him for English shillings; he gave them two, which he happened to have about him, and it was not without some dispute that they took the rest of the money in pistereens. Their business seemed to be to catch large fish at a good distance from the shore, which they salted in bulk, in a place made for that purpose; in the middle of their boat: Of this merchandise they had about two quintals on board, which they offered for about fifteen shillings, and would probably have sold for half the money. The fresh fish, which was bought for about nineteen shillings and sixpence, served the whole ship's company; the salt was not wanted.
The sea-provision of these fishermen consisted of nothing more than a cask of water, and a bag of Cassada flour, which they called Farinha de Pao, or wooden flour, which indeed is a name which very well suits its taste and appearance. Their water-cask was large, as wide as their boat, and exactly fitted a place that was made for it in the ballast; it was impossible therefore to draw out any of its contents by a tap, the sides being, from the bottom to the top, wholly inaccessible; neither could any be taken out by dipping a vessel in at the head, for an opening sufficiently wide for that purpose would have endangered the loss of great part of it by the rolling of the vessel: Their expedient to get at their water, so situated, was curious; when one of them wanted to drink, he applied to his neighbour, who accompanied him to the water-cask with a hollow cane about three feet long, which was open at both ends; this he thrust into the cask through a small hole in the top, and then, stopping the upper end with the palm of his hand, drew it out; the pressure of the air against the other end keeping in the water which it contained; to this end the person who wanted to drink applied his mouth, and the assistant then taking his hand from the other, and admitting the air above, the cane immediately parted with its contents, which the drinker drew off till he was satisfied.[71]
[Footnote 71: It seems pretty obvious that the form and position of the water-cask, were accommodated to this known practicability of getting conveniently at its contents. But how such a method should have become familiar to these fishermen, it is difficult to conjecture. Some accidental observation of a reed or similar body containing water when one of its ends was pressed close, had, in all probability, furnished them or their ancestors with the hint. Man, when necessitated to exertion, is essentially a philosopher; but when his natural wants are by any means supplied, he dwindles into a fool. Hence his discoveries are often invaluable in their consequences, whilst his reasonings in explanation of them are absurd and childish. A contrasted collection of both would be a most amusing, and at the same time a humiliating picture of the inconsistency of human nature.--E.]
We stood off and on along the shore till the 12th, and successively saw a remarkable hill near Santo Espirito, then Cape St Thomas, and then an island just without Cape Frio, which in some maps is called the island of Frio, and which being high, with a hollow in the middle, has the appearance of two islands when seen at a distance. On this day we stood along the shore for Rio de Janeiro, and at nine the next morning made sail for the harbour. I then sent Mr Hicks, my first lieutenant, before us in the pinnace, up to the city, to acquaint the governor, that we put in there to procure water and refreshments; and to desire the assistance of a pilot to bring us into proper anchoring-ground. I continued to stand up the river, trusting to Mr Bellisle's draught, published in the Petit Atlas Maritime, vol. ii. N0. 54, which we found very good, till five o'clock in the evening, expecting the return of my lieutenant; and just as I was about to anchor, above the island of Cobras, which lies before the city, the pinnace came back without him, having on board a Portuguese officer, but no pilot. The people in the boat told me, that my lieutenant was detained by the viceroy till I should go on shore.[72] We came immediately to an anchor; and, almost at the same time, a ten-oared boat, full of soldiers, came up, and kept rowing round the ship, without exchanging a word: In less than a quarter of an hour, another boat came on board with several of the viceroy's officers, who asked, whence we came; what was our cargo; the number of men and guns on board; the object of our voyage, and several other questions, which we directly and truly answered: They then told me, as a kind of apology for detaining my lieutenant, and putting an officer on board my pinnace, that it was the invariable custom of the place, to detain the first officer who came on shore from any ship on her arrival, till a boat from the viceroy had visited her, and to suffer no boat to go either from or to a ship, while she lay there, without having a soldier on board. They said that I might go on shore when I pleased; but wished that every other person might remain on board till the paper which they should draw up had been delivered to the viceroy, promising that, immediately upon their return, the lieutenant should be sent on board.