“Indeed I do,” said the scholar, who commenced to recite in his elegant accent.
“The Bull’s Horn?” I said. “What’s that?”
Isidorus peered ahead and grabbed the railing. “I think you’re about to find out, Gordianus. Hold on tight!”
Antipater and I followed his example, though I failed to see the need. We were about to sail into the harbor, with plenty of distance between the breakwaters and us. As far as I could see, there were no ships or any other hazards nearby.
Suddenly, from high above our heads, I head the blaring of a horn. I looked up, and to my amazement realized the noise was issuing from the conch held by the nearest of the four Triton statues that perched at the four corners of the Pharos. The horn blared again.
The ship made a sharp turn to one side. The three of us were showered with sea spray. As I blinked my eyes to quell the stinging, I looked back to see the jagged outcrop of stone around which our captain had deftly maneuvered. The rock did indeed resemble a bull’s horn, rising from the foamy waves.
“What just happened?” I said.
“There are watchers posted on the Pharos who observe every ship as it arrives and departs,” explained Isidorus. “Our captain has plenty of experience on this route, but in case he had any difficulty in spotting the Bull’s Horn, a watcher on the Pharos sounded a specific signal to alert him as our ship approached the hazard.”
“But how can a statue be made to blow a horn?”
Isidorus smiled. “That is yet another of the wonders of the Pharos. There’s a treatise that describes the Tritons’ manufacture and operation in the Library, but I’m afraid King Ptolemy restricts access to such documents; the pneumatic science behind the working of the Tritons is a state secret. But I can tell you that each of the conches held by the four Tritons produces a different note. By sounding two or more horns in unison, or by sounding a sequence of different notes, or by holding notes for various durations, a great many different signals can be given. Experienced captains know the signals that apply to them—such as that simple warning note about the Bull’s Horn.”
“Amazing!” I said.
“And did you notice the movable mirrors that run along the parapets, between each of the four Tritons?”
I had not. Peering up, I now perceived large sheets of hammered bronze attached to pivots along the parapets, tilted at various angles.
“Those also can be used to send signals, but unlike the horns, their messages can be directed to a specific ship or even to a particular building in the city of Alexandria, by aiming flashes of reflected sunlight.”
I gazed up at the Pharos, more in awe of the building than ever.
“Tell me, do you have a place to stay in Alexandria?” asked Isidorus.
“Not yet,” said Antipater.
“Then you must stay with me. No, I insist! My quarters are very near the Library. The accommodations are simple, but you’ll have your own room. The offer is an act of selfishness on my part, for I greatly desire to hear every detail of your journey to see the Wonders. And in return, I promise to do what I can to permit your entry to the Library.”
“A splendid arrangement!” declared Antipater.
* * *
What sort of city could produce a structure as remarkable as the Pharos? As we sailed into the harbor we passed a number of islands with beautiful gardens and buildings; these were the property of the king, extensions of the grand royal palace that lined much of the shore. I had never seen such a handsome waterfront; the buildings stood many stories tall and were appointed with splendid decorations, sweeping balconies, and aerial gardens. The skyline of the city beyond offered glimpses of elegant towers, temple rooftops crowded with statues, and soaring obelisks. Rising above the skyline at a considerable distance, built upon the only hill of any significance, was a temple that appeared to be as grand as any we had encountered in our travels.
In the coming days—and months, as it turned out—I would have ample opportunity to explore every corner of Alexandria. Of all the cities I visited in our journey, it was by far the most impressive. Alexander the Great had chosen the site; an architect named Dinocrates laid out the city in a grid pattern, with wide, palm-lined boulevards and stately intersections decorated with fountains, statues, and obelisks. The temple on the hill was that of Serapis, who combined the attributes of Greek Zeus and Egyptian Osiris; to my Roman eyes, his temple, like so much of Alexandria, was at once familiar and wildly exotic. I had thought that Memphis must be the crossroads of the world, with its heady mixture of tongues and races, but Alexandria was even more cosmopolitan. Any object ever made by man, anywhere on earth, could be found in its teeming markets. In a single shop, I once came across a Roman augur’s wand, a terebinth box from vanished Carthage, and a gown made of pure silk from distant Serica.
More important, for Antipater, in Alexandria one might find a copy of every book that had ever existed. The Library of the Ptolemies was said to be the greatest on earth, thanks to its aggressive acquisition policy. Every ship that arrived in the harbor was boarded by customs agents who demanded to be shown any book that happened to be on board. The agents checked each book against a master list and, if it was not already in the Library, they took the volume into custody, sent it to be copied, and only then returned it to its owner.
