Byrd was a thin, dry Briton with a great head of red hair that could have served as a ship’s lantern. Roberto, who tried to wash whenever he could, taking advantage of the rain to rinse his clothes, had never seen the doctor change his shirt in all these months of sailing. Luckily, even for a young man accustomed to the drawing rooms of Paris, the stink of a ship was such that the stink of one’s fellows was no longer perceptible.
A hearty drinker of beer Byrd was, and Roberto had learned to keep up with him, pretending to swallow while leaving the liquid in his glass always more or less at the same level. Byrd, it seemed, had been taught to fill only empty glasses. And since his own was empty always, he filled it, raising it for a toast. The Knight did not drink: he listened and asked an occasional question.
Byrd spoke decent French, like every Englishman who in those days wanted to travel beyond his own island, and he had been captivated by Roberto’s stories about the growing of grapes in the Monferrato region. Roberto listened politely to how beer was made in London. Then they talked about the sea. Roberto was making his first voyage, and Byrd seemed not to want to talk too much about navigation. The Knight asked questions only about the possible location of Escondida, but as Byrd could offer no clue, he received no reply.
Since Byrd said he was making this voyage to study the flora, Roberto sounded him out on that subject. Byrd was not ignorant about botanical matters, and he could thus indulge in long explanations, which Roberto made a show of hearing with interest. At every landfall Byrd and his men actually collected plants, though not with the care of scholars who had undertaken the voyage for that purpose; still, many evenings were spent examining what they had gathered.
During the first days Byrd tried to learn about Roberto’s past, and the Knight’s as well, as if he suspected them. Roberto gave the version agreed on in Paris: a Savoyard, he had fought at Casale on the side of the imperials, had got into trouble first in Turin, then in Paris, after a series of duels; he had had the misfortune of wounding a favorite of the Cardinal, and thus had chosen the Pacific solution to put much water between himself and his persecutors. The Knight narrated many stories; some took place in Venice, others in Ireland, still others in South America, but it was not clear which were his and which were not.
Finally Roberto discovered that Byrd liked to talk about women. The young man invented furious loves with furious courtesans, and the doctor’s eyes glistened as he vowed he would visit Paris one day. Then he recovered himself and observed that all papists were corrupt. Roberto pointed out that many Savoyards were practically Huguenots. The Knight made the sign of the Cross, and returned to the subject of women.
Until the landing at Más Afuera, the doctor’s life seemed to unfold at a steady pace, and if he took any readings on board, it was while the others were ashore. When the ship was under sail, he lingered on deck during the day, sat up with his table companions till the small hours, and certainly slept at night. His cramped lodging adjoined Roberto’s, a pair of narrow cubicles separated by a partition, and Roberto lay awake to listen.
But once they had entered the Pacific, Byrd’s habits changed. After the call at Más Afuera, Roberto saw the doctor go off every morning from seven to eight, whereas before, they had fallen into the way of meeting at that hour for breakfast. Then throughout the period when the ship was heading north, until it reached the island of turtles, Byrd vanished at six in the morning. When the ship again turned its prow westwards, the doctor advanced his rising to five o’clock, when Roberto would hear an assistant come to wake him. Then by degrees the doctor took to rising at four, at three, at two.
Roberto was able to check on him because he had brought along a little sand clock. At sunset, as if idly strolling, he would pass by the helmsman, where next to the compass floating in its whale-oil there was a little stick on which the pilot, after taking the latest bearings, marked the position and the presumed time. Roberto took careful note, then went and turned over his hourglass, returning to repeat the operation when it seemed to him that the hour was about to end. And so, even lingering after supper, he could always calculate the hour with some assurance. In this way he became convinced that Byrd went off a little earlier each morning, and if he kept up that pace, one fine day he would rise at midnight.
After what Roberto had learned from Mazarin and Colbert and his men, it did not take long to deduce that Byrd’s disappearances corresponded to the successive passing of the meridians. So, then, it was as if someone sent a signal from Europe, every day at the noon of the Canaries or at some other fixed hour, which Byrd went off to receive. Knowing the hour on board the Amaryllis, Byrd was thus able to learn their longitude.
It would have sufficed to follow Byrd as he slipped away. But that was not easy. When the doctor disappeared in the morning, it was impossible to follow him unobserved. When he began moving in the hours of darkness, Roberto could hear the man leave, but he could not go after him at once. So he waited a little, then tried to discover the path he had taken. But every effort proved futile. I refrain from mentioning the many times when, essaying a route in the dark, Roberto ended up among the hammocks of the crew, or stumbled over the pilgrims; but more and more often he would encounter someone who at that hour should have been asleep. So there were others keeping their eyes open.
When Roberto met one of these spies, he would mention his usual insomnia and go up on deck, managing not to arouse suspicion. For some time he had earned himself the reputation of an eccentric who dreamed at night, wide-eyed, and spent the day with his eyes closed. But when he found himself on deck, although he could exchange a few words with the sailor on watch, if they could make themselves understood, the night was lost.
So the months went by, Roberto was close to discovering the mystery of the Amaryllis, but had not yet found a way to stick his nose where he would have liked.
In addition, from the beginning he had tried to extract some confidences from Byrd. And he thought up a method that even Mazarin had not been capable of suggesting to him. To satisfy his curiosities, during the day he asked questions of the Knight, who was unable to answer. Roberto emphasized that the things he was asking were of great importance if the Knight was truly determined to find Escondida. And thus, at evening, the Knight would repeat the questions to the doctor.
One night on the bridge, they were looking at the stars, and the doctor remarked that it must be midnight. The Knight, prompted by Roberto a few hours earlier, said, “I wonder what time it is now in Malta.”
“That is easy,” the words escaped the doctor. Then he corrected himself, “Or, rather, that is very difficult, my friend.” The Knight was amazed to learn it could not be deduced from calculation of the meridians: “Does the sun not take an hour to cover fifteen degrees of meridian? So it would be enough to say that we are so many degrees from the Mediterranean, divide by fifteen then, and knowing our own time as we do, we would discover what time it is there.”
“You sound like one of those astronomers who have spent their lives poring over charts without ever navigating. Otherwise you would be aware that it is impossible to know on what meridian one is.”
Byrd answered more or less what Roberto already knew but the Knight did not. On this subject, however, Byrd proved loquacious: “Our ancestors thought they had an infallible method, based on the eclipses of the moon. You know what a lunar eclipse is: it is a moment when the sun, the earth, and the moon are on a single line, and the shadow of the earth falls on the face of the moon. Since it is possible to predict the day and exact hour of future eclipses, and it is enough to have at hand the Tables of Regiomontanus, you presume you know that a given eclipse should take place in Jerusalem at midnight, and you will observe it at ten o’clock. You will then know that you are at two hours’ distance from Jerusalem and therefore your observation point is thirty degrees west of that city.”
“Perfect,” Roberto said. “All praise to the ancients!”
“Yes, but this calculation is not always accurate. The great Columbus, in the course of his second voyage, calculated by an eclipse while he lay at anchor off Hispaniola, and he made an error of twenty-three degrees west, that is to say a difference of an hour and a half! And on his fourth voyage, again relying on an eclipse, he
