“They say that you know all medicine,” she flung out at him. “Have you any physic for a wasted soul?” With a fierce gesture she pointed at the half-open door. “Why do you stay in this dull sodden England—you who are free?”

“There are times, your Grace,” the physician replied tranquilly, “when I forget whether this is England or Venetia.”

The Queen moved restlessly about the room, and stopped to look at an herbal. “Will you teach me the properties of plants?” she asked, as she turned the pages carelessly. “With Mary’s help we might make here an herb-garden. It is well to know the noxious plants from the wholesome, lest—unintentionally—one should put the wrong flavor in a draught.”

Tomaso had seen persons in this frame of mind before. He had taught many pupils the properties of plants, but he had his own ways of doing it. In his native city of Padua and elsewhere, there were chemists who owed their fame to the number of poisons they understood.

“I have some experiments in hand which may interest your Grace,” he answered. “If you will come into my poor studio you shall see them.” He led the way into the inner chamber where no one was ever allowed to come. The walls were lined with shelves on which stood jars, flasks, mortars and other utensils whose use the Queen could not guess. Tomaso did not warn her not to touch any flask. She handled, sniffed and all but tasted. She finally went so far as to pour a small quantity of an unsensational-looking fluid into a glass, and a drop fell on the edge of her mantle, in which it burned a clean hole.

Tomaso was pouring something into a bowl from a retort, and seemed not to have seen the action. Then he added a pinch of a colorless powder, and dipped a skein of silk into the bowl. It came out ruby-red. Another pinch of powder, another bath, and it was like a handful of iris petals. Other experiments gave emerald like rain-wet leaves in sunlight, gold like the pale outer petals of asphodels, ripe glowing orange, blue like the Mediterranean. Then suddenly the light in the stone-arched window was darkened and thunder crashed overhead. The little brazier in the far corner glowed like a red eye, and Tomaso had to light a horn lantern before the Queen could see her way out of the room.

“We shall have to wait, now, until after the storm,” he said, as he led the way into the outer room. “I am making these experiments for the benefit of a company of weavers whom a young friend of mine has brought here. The young man—he is a wool-merchant—has an idea that we can weave tapestry here as well as they can in Damascus if we have the wherewithal, and I said that I would attend to the dyeing of the yarn.”

The Queen gave a contemptuous little laugh and sank into the great chair. “These Saxons! I think they are born with paws instead of hands! They are good for nothing but to herd cattle and plow and reap. Do your stars tell you foolish tales like that, Master Tomaso?”