“You beat me to it, Uncle.” Gallowglass had soundlessly entered the room and was unloading parcels. “I’ve got your paper. And your pens. And some tonic for Jack’s throat.”
“That’s what he gets for spending all his time up towers with Tom, talking about the stars.” Matthew rubbed his face. “We will have to make sure Tom is provided for, Gallowglass. Walter won’t be able to keep him in service much longer. Henry Percy will need to step into the breach—again— but I should contribute something to his upkeep, too.”
“Speaking of Tom, have you seen his plans for a single-eyed spectacle to view the heavens? He and Jack are calling it a star glass.”
My scalp tingled as the threads of the room snapped with energy. Time sounded a low protest in the corners.
“A star glass.” I kept my voice even. “What does it look like, Gallowglass?”
“Ask them yourself,” Gallowglass said, turning his head toward the stairs. Jack and Mop careened into the room. Tom followed absently behind, a pair of broken spectacles in his hand.
“You will certainly leave a mark on the future if you meddle with this, Diana,” Matthew warned.
“Look, look, look.” Jack brandished a thick piece of wood. Mop followed its movements and snapped his jaws at the stick as it went by. “Master Harriot said if we hollowed this out and put a spectacle lens in the end, it would make faraway things seem near. Do you know how to carve, Master Roydon? If not, do you think the joiner in St. Dunstan’s might teach me? Are there any more buns? Master Harriot’s stomach has been growling all afternoon.”
“Let me see that,” I said, holding out my hand for the wooden tube. “The buns are in the cupboard on the landing, Jack, where they always are. Give one to Master Harriot, and take one for yourself. And no,” I said, cutting the child off when he opened his mouth, “Mop doesn’t get to share yours.”
“Good day, Mistress Roydon,” Tom said dreamily. “If such a simple pair of spectacles can make a man see God’s words in the Bible, surely they could be made more complex to help him see God’s works in the Book of Nature. Thank you, Jack.” Tom absently bit into the bun.
“And how would you make them more complex?” I wondered aloud, hardly daring to breathe.
“I would combine convex and concave lenses, as the Neapolitan gentleman Signor della Porta suggested in a book I read last year. The human arm is not long enough to hold them apart at the proper distance. So we are trying to extend our arm’s reach with that piece of wood.”
With those words Thomas Harriot changed the history of science. And I didn’t have to meddle with the past—I only had to see to it that the past was not forgotten.
“But these are just idle imaginings. I will put these ideas down on paper and think about them later.” Tom sighed.
This was the problem with early-modern scientists: They didn’t understand the necessity of publishing. In the case of Thomas Harriot, his ideas had definitely perished for want of a publisher.
“I think you’re right, Tom. But this wooden tube is not long enough.” I smiled at him brightly. “As for the joiner in St. Dunstan’s, Monsieur Vallin might be of more help if a long, hollow tube is what you need. Shall we go and see him?”
“Yes!” Jack shouted, jumping into the air. “Monsieur Vallin has all sorts of gears and springs, Master Harriot. He gave me one, and it is in my treasure box. Mine is not as big as Mistress Roydon’s, but it holds enough. Can we go now?”
“What is Auntie up to?” Gallowglass asked Matthew, both mystified and wary.
“I think she’s getting back at Walter for not paying sufficient attention to the future,” Matthew said mildly.
“Oh. That’s all right, then. And here I thought I smelled trouble.”
“There’s always trouble,” Matthew said. “Are you sure you know what you’re doing, ma lionne?”
So much had happened that I could not fix. I couldn’t bring my child back or save the witches in Scotland. We’d brought Ashmole 782 all the way from Prague, only to discover that it could not be taken safely into the future. We had said goodbye to our fathers and were about to leave our friends. And most of these experiences would vanish without a trace. But I knew exactly how to ensure that Tom’s telescope survived.
I nodded. “The past has changed us, Matthew. Why should we not change it, too?”
Matthew caught my hand in his and kissed it. “Go to Monsieur Vallin, then. Have him send me the bill.”