General amusement in the Chapel now, occasioned by the facial expressions of Messrs. Ditton and Whiston, who were no longer even putting forth the effort to be angry or agitated. They now looked as if they were resting on slabs at the College of Physicians, about halfway through their own autopsies.

Not partaking of the entertainment was the Marquis of Ravenscar, who had just been handed a slip of paper by a page. He opened and read it, and for only a moment looked as dismayed as Ditton and Whiston. Then he got the better of himself. Like the deaf dinner-guest pretending that he heard the bon mot, he adopted a knowing grin, and allowed the mood of the House to infiltrate his phizz. He glanced down to review the documents spread out on the table before him, as if he had forgotten the subject of this hearing and needed to jog his memory. Then he spoke: “Merely to avoid ramming the odd continent is a low bar. What of the other three Projects that are true in theory? For it seems to me that if such Herculean efforts are to be made to practice a scheme, they were better directed to schemes that should enable our sea-captains to discover the Longitude anywhere.”

Sir Isaac Newton’s answer comprised many many words, but contained no more than the following information: that one could do it by telling the time with an excellent sea-going chronometer, which no one knew how to make yet; or by watching the satellites of Jupiter through an excellent sea-going telescope, which no one knew how to make yet; or by looking at the position of the moon and comparing it against calculations derived from his, i.e., Sir Isaac Newton’s, lunar theory, which was not quite finished yet but would be coming out any minute now in a book. In the timeless and universal manner of authors conversing in public places, he did not fail to mention its title: Volume III of Principia Mathematica, entitled The System of the World, available shortly where books are sold.

The Marquis of Ravenscar only heard this peroration in its general outlines because he spent the whole time jetting notes onto scraps of paper and stuffing them into minions’ hands. But when his ears detected a lengthy silence, he said: “These, er, calculations-would they be similar to what are already used for finding latitude? Or-”

“Infinitely more complex.”

“Oh, bother,” said Ravenscar distractedly, still scribbling notes, like the naughtiest schoolboy in the entire history of the world. “I suppose every ship would then require an extra deck crowded with computers, and a flock of geese to keep ’em in quills.”

“Or else we should need every ship to carry an Arithmetickal Engine,” Newton returned. Then, not trusting the House to detect his sarcasm, he went on: “-a chim?rical phant’sy of the Hanoverian dilettante and plagiarist, Baron von Leibniz, which he has abjectly failed to complete lo these many years.” And it seemed as if Newton were prepared to enumerate the Baron’s defects at much greater length, but he was interrupted, and distracted, by the hot arrival in his palm of a note still damp from Ravenscar’s quill.

“So the lunar method too requires an apparatus we do not know how to make yet,” Ravenscar said, moving to sum up with an abruptness, a dispatch, that had not been seen in this House since the last time a Papist had tried to blow it up. The benches rustled with the stirrings of many expensively clad arses. A positive start was running through the Chapel.

“Yes, my lord-”

“And so it is your testimony that our ships shall persist in running aground and slaughtering our brave mariners until we shall learn how to make certain things we do not know how to make yet.”

“Yes, my-”

“Who shall invent these remarkable devices?”

“Projectors, entrepeneurs, adventurers, my-”

“What incentive could lead such a man to wager years of his life on attempting to devise a new Technology-if I may borrow a word from Dr. Waterhouse-that may turn out to be infeasible?” Ravenscar asked, standing up, and holding out his hand to let it be known that it was now permissible for someone to hand him his walking-stick. Someone did.

“My lord, some monetary-” testified Sir Isaac Newton, standing up as well-for he had read the note.

“A monetary prize-a Reward! To be awarded to such Person or Persons as shall discover a more certain and practical Method of ascertaining the Longitude? Is that your testimony? Yes? Sir Isaac, once again the Heavens resound with your brilliance and all Britannia gapes in awe at your lapidary ingenuity.” Ravenscar was crossing the floor while he thus orated, a novelty that roused to full wakefulness many a senior back-bencher who had lost, or never found, the faculty of walking and talking at the same time. “ ’Twere a crime to waste any more of the time of the world’s foremost savant on details,” Ravenscar proclaimed, arriving at Newton’s side and snatching his arm. “I have unbounded confidence that Mr. Halley, Dr. Clarke, and Mr. Cotes can bat down any further questions from Commons-as for myself, I have business with certain troublous Lords-I may as well see you out, Sir Isaac, as we go the same way!” By that time he and Sir Isaac were out the door, leaving a House of more or less dumbfounded Commons; Ditton and Whiston, half-murdered but still breathing; and the three lesser savants mentioned, who had been summoned as mere acolytes to the High Priest, and been left in charge of the Rite.

NEWTON NEARLY LOST AN ARM in the lobby of Commons, for he moved left-towards Lords-as Roger Comstock, the Marquis of Ravenscar, who had possession of the arm, moved right-towards Westminster Hall. “We are summoned by Lords,” Ravenscar explained, re-socketing Newton’s shoulder-joint, and trying it with a wiggle, “but not to Lords.” Dodging round a few bends and negotiating diverse stair-flights they came into the cleft between the two plank law-courts, and entered the great Hall again-just as devoid of Vikings, and strewn with inappropriate modern-day Englishmen, as ever. A man in quasi-genteel clothes browsed a bookshop, to let all the world know he was literate; a straw projected from his shoe, as a signal to barristers that he would give false testimony in exchange for money. A stirring in the air created a serial heaving down rows of sunfaded, smoke-stained, bullet-holed banners: the colors of French regiments that had been taken by Marlborough at Blenheim and other places. These had been hung on the walls to add a bit of color, and been promptly forgotten. A fair bit of noise was coming into the north end of the Hall from the New Palace Yard. The man who’d received the whipping there earlier had been left in the pillory, and a few score common Londoners had gathered in his sight, to fling handfuls of mud and horse-manure at his face in hopes that they might induce suffocation. This sort of thing was common enough in London that most persons could will themselves not to see it. Ravenscar, uncharacteristically, was gazing directly at the scene. His eyes were too old, and too far away, to resolve the details; but he knew what it was. “Ah, fortunate man!” he said wistfully, “if only I could trade places with him for the next hour!”

Newton straightened up and, prudently, slowed down. He glanced up and around as if wondering whether any of the over-looming angels had heard. “Where are we going, my lord?”

“Star Chamber,” Ravenscar announced, simultaneously tightening his grip on Newton’s arm lest these fell words cause the eminent Natural Philosopher to spin away and make a break for it. Sir Isaac did no such thing; but he was startled. He had expected that Roger Comstock would name one of the buildings of the Exchequer, which in recent decades had advanced far, and on a broad front, from the Hall’s northeast corner, so that they nearly filled the space between it and the River. Star Chamber, on the other hand, was small, and ancient; Kings of England had used to meet there with their Privy Councils. “Who has summoned us?” Newton asked.