“Do you know why Marcus and your brother Louis were resistant, when you, Louisa, and Benjamin were not?” I carefully avoided assuming that this accounted for all his children. Matthew would tell me more when—if—he was able.
His shoulders lost their sharp edge. “Louis and Louisa died long before it was possible to run blood tests. I have only my blood, Marcus’s blood, and Ysabeau’s blood to work with—and that’s not enough to draw any reliable conclusions.”
“You have a theory, though,” I said, thinking of his diagrams.
“I’ve always thought of blood rage as a kind of infection and supposed Marcus and Louis had a natural resistance to it. But when Goody Alsop told us that only a weaver could bear a wearh child, it made me wonder if I’ve been looking at this the wrong way. Perhaps it’s not something in Marcus that’s resistant but something in me that’s receptive, just as a weaver is receptive to a wearh’s seed, unlike any other warmblooded woman.”
“A genetic predisposition?” I asked, trying to follow his reasoning.
“Perhaps. Possibly something recessive that seldom shows up in the population unless both parents carry the gene. I keep thinking of your friend Catherine Streeter and your description of her as ‘thrice-blessed,’ as though her genetic whole is somehow greater than the sum of its parts.”
Matthew was quickly lost in the intricacies of his intellectual puzzle. “Then I started wondering whether the fact that you are a weaver is sufficient to explain your ability to conceive. What if it’s a combination of recessive genetic traits—not only yours but mine as well?” When his hands drove through his hair in frustration, I took it as a sign that the last of the blood rage was gone and heaved a silent sigh of relief.
“When we get back to your lab, you’ll be able to test your theory.” I dropped my voice. “And once Sarah and Em hear they’re going to be aunts, you’ll have no problem getting them to give you a blood sample—or to baby-sit. They both have bad cases of granny lust and have been borrowing the neighbors’ children for years to satisfy it.”
That conjured a smile at last.
“Granny lust? What a rude expression.” Matthew approached me. “Ysabeau’s probably developed a dire case of it, too, over the centuries.”
“It doesn’t bear thinking about,” I said with a mock shudder.
It was in these moments—when we talked about the reactions of others to our news rather than analyzing our own responses to it—that I felt truly pregnant. My body had barely registered the new life it was carrying, and in the day-to-day busyness at the Hart and Crown it was easy to forget that we would soon be parents. I could go for days without thinking about it, only to be reminded of my condition when Matthew came to me, deep in the night, to rest his hands on my belly in silent communion while he listened for the signs of new life.
“Nor can I bear to think of you in harm’s way.” Matthew took me in his arms. “Be careful, ma lionne,” he whispered against my hair.
“I will. I promise.”
“You wouldn’t recognize danger if it came to you with an engraved invitation.” He drew away so that he could look into my eyes. “Just remember: Vampires are not like warmbloods. Don’t underestimate how lethal we can be.”
Matthew’s warning echoed long after he delivered it. I found myself watching the other vampires in the household for the small signs that they were thinking of moving or that they were hungry or tired, restless or bored. The signs were subtle and easy to miss. When Annie walked past Gallowglass, his lids dropped to shutter the avid expression in his eyes, but it was over so quickly I might have imagined it, just as I might have imagined the flaring of Hancock’s nostrils when a group of warmbloods passed by on the street below.
I was not imagining the extra laundry charges to clean the blood from their linen, however. Gallowglass and Hancock were hunting and feeding in the city, though Matthew did not join them. He confined himself to what Françoise could procure from the butchers.
When Annie and I went to Mary’s on Monday afternoon, as was our custom, I remained more alert to my surroundings than I had been since our arrival. This time it wasn’t to absorb the details of Elizabethan life but to make sure we weren’t being watched or followed. I kept Annie safely within arm’s reach, and Pierre retained a firm grip on Jack. We had learned the hard way that it was the only hope we had of keeping the boy from “magpie-ing,” as Hancock called it. In spite of our efforts, Jack still managed to commit numerous acts of petty theft. Matthew instituted a new household ritual in an effort to combat it. Jack had to empty his pockets every night and confess how he’d come by his extraordinary assortment of shiny objects. So far it hadn’t put a damper on his activities.
Given his light fingers, Jack could not yet be trusted in the Countess of Pembroke’s well-appointed home. Annie and I took our leave of Pierre and Jack, and the girl’s expression brightened considerably at the prospect of a long gossip with Mary’s maid, Joan, and a few hours of freedom from Jack’s unwanted attentions.
“Diana!” Mary cried when I crossed the threshold of her laboratory. No matter how many times I entered, it never failed to take my breath away, with its vivid murals illustrating the making of the philosopher’s stone. “Come, I have something to show you.”
“Is this your surprise?” Mary had been hinting that she would soon delight me with a display of her alchemical proficiency.
“Yes,” Mary replied, drawing her notebook from the table. “See here, it is now the eighteenth of January, and I began the work on the ninth of December. It has taken exactly forty days, just as the sages promised.”
Forty was a significant number in alchemical work, and Mary could have been undertaking any number of experiments. I looked through her laboratory entries in an effort to figure out what she’d been doing. Over the past two weeks, I’d learned Mary’s shorthand and the symbols she used for the various metals and substances. If I understood correctly, she began this process with an ounce of silver dissolved in aqua fortis—the “strong water” of the alchemists, known in my own time as nitric acid. To this, Mary added distilled water.
“Is this your mark for mercury?” I asked, pointing to an unfamiliar glyph.
“Yes—but only the mercury I obtain from the finest source in Germany.” Mary spared no expense when it came to her laboratory, chemicals, or equipment. She drew me toward another example of her commitment to quality at any price: a large glass flask. It was free of imperfections and clear as crystal, which meant it had come from Venice. The English glass made in Sussex was marred with tiny bubbles and faint shadows. The Countess of Pembroke preferred the Venetian stuff—and could afford it.
When I saw what was inside, a premonitory finger brushed against my shoulders.
A silver tree grew from a small seed in the bottom of the flask. Branches had sprouted from the trunk, forking out and filling the top of the vessel with glittering strands. Tiny beads at the ends of the branches suggested fruit, as though the tree were ripe and ready for harvesting.
“The arbor Dianæ,” Mary said proudly. “It is as though God inspired me to make it so that it would be here to welcome you. I have tried to grow the tree before, but it has never taken root. No one could see such a thing and doubt the truth and power of the alchemical art.”
Diana’s tree was a sight to behold. It gleamed and grew before my eyes, sending out new shoots to fill the remaining space in the vessel. Knowing that it was nothing more than a dendritic amalgam of crystallized silver did little to diminish my wonder at seeing a lump of metal go through what looked like a vegetative process.