Perenelle smiled. The first genuine smile he'd seen from her. "Very well. Let's start with something simple: purifying copper. We'll focus on removing impurities and revealing the metal's true Venusian nature, using calcination, dissolution, and crystallization. Should take about three days if you're careful."
They moved to the laboratory, where Perenelle had already prepared materials: several chunks of raw copper, various alchemical salts, three different acids in carefully labeled bottles, and a small athanor. The specialized alchemical furnace that could maintain precise temperatures for extended periods.
"First principle," Perenelle said, lighting the athanor with a casual flick of her wand, "is safety. Alchemical processes involve substances that can burn, corrode, poison, or explode. You will always, always, work with proper precautions."
She demonstrated the protective charms: a shield around the work area to contain splashes and fumes, a ventilation charm to ensure fresh air, a temperature monitoring spell on the athanor, and a proximity ward that would alert them if anything went dangerously wrong.
"Now, calcination." Nicholas placed a piece of copper in a crucible and slid it into the athanor. "We're heating it in air to oxidize the surface, burning away organic impurities and beginning the purification process. This takes approximately six hours at steady heat. While that's happening, we can discuss theoretical foundations."
They returned to the library, and Perenelle produced another set of parchments, these ones covered in diagrams of alchemical vessels and apparatus.
"Different operations require different vessels," she explained. "The pelican for circulation, the alembic for distillation, the retort for destructive distillation, the crucible for calcination. Each shape serves a specific purpose in manipulating the three primes."
Rowan sketched the vessels in his journal, noting their purposes and corresponding operations. The precision required was extraordinary. The angle of the alembic's neck, the size of the retort's bulb, the material of the crucible all mattered for successful transformation.
"Why does the physical shape matter?" he asked. "In Transfiguration, the tool is just a focus for the wizard's will. But these vessels seem to have inherent properties."
"Because alchemy works the other way around," Nicholas said. "Transfiguration forces material into a new shape. The material resists, and you overpower it. In alchemy, you're working with what the material already is, coaxing it toward something it could naturally become. The vessels create the conditions for that transformation to happen on its own terms."
"So it's more like Potions than Transfiguration?"
"Precisely! Though at the highest levels, all magical disciplines converge. A true master can perform alchemical transmutation through pure Transfiguration, or brew potions through alchemical principles. But for learning, it's essential to understand the distinct approaches."
At midday, they checked the calcination. The copper had turned black with copper oxide, and when Nicholas removed the crucible from the athanor, the metal inside had a dull, crumbling texture.
"Perfect. Now we dissolve this in acid. Carefully controlled acid that will attack the oxide without destroying the copper itself."
Perenelle prepared a solution of diluted vitriolic acid, and together they demonstrated how to add the blackened copper slowly, monitoring the reaction as blue-green copper sulfate formed in solution.
"This is the dissolution phase," she explained. "We're converting solid to liquid, allowing the Mercurial principle to dominate. The copper is now fluid, accessible, ready for further purification."
"How long until the next step?"
"Overnight. The dissolution needs time to complete, and then we'll need to carefully separate the solution from any remaining solids. Tomorrow morning, we'll begin crystallization."
While waiting for alchemical processes, Rowan discovered, was an opportunity for deeper theoretical study. They spent the afternoon in the library, and Nicholas introduced him to texts he'd never encountered.
"This," Nicholas said reverently, pulling down a leather-bound volume whose pages seemed to glow faintly, "is the Emerald Tablet of Hermes Trismegistus. Or rather, a very good copy. The original is lost, if it ever existed physically. Every serious alchemist must study the Tablet. It contains the fundamental wisdom of the Art in thirteen cryptic statements."
Rowan read the first lines:
"Tis true without lying, certain and most true. That which is below is like that which is above and that which is above is like that which is below to do the miracles of one only thing..."
The language was archaic and obscure, but even from these opening lines, Rowan could sense the profound truth underlying the words. As above, so below. The microcosm and macrocosm. Everything connected to everything else.
"You'll spend years unpacking the meaning of these thirteen statements," Perenelle said. "Every alchemist interprets them slightly differently, finding new layers of significance. That's the nature of hermetic wisdom. It reveals itself gradually, as your understanding deepens."
They studied the Emerald Tablet for two hours, with Nicholas and Perenelle offering different interpretations of each line, pointing out connections to other alchemical texts, relating abstract principles to practical operations. Rowan filled page after page of his journal with notes, diagrams, and questions.
When evening came and they retired to the garden for dinner, Rowan's mind was buzzing with new concepts. The conversation naturally turned to his plans for magical innovation.
"These communication devices you mentioned," Nicholas said, serving himself salad. "You're essentially talking about creating an alchemical correspondence at a distance. If two objects are properly attuned, say, through incorporating the same alchemical preparation into each, they could maintain sympathetic connection regardless of physical separation."
"Exactly," Rowan said, excited that Nicholas had immediately grasped the theoretical foundation. "Pair two mirrors, two crystals, two specially prepared parchments, whatever medium works best, and create a sustained link between them. Then layer charms on top for transmitting voice or text."
"You'd need to solve the degradation problem," Perenelle noted. "Magical connections decay over time and distance. Even the Floo Network requires constant maintenance and only works because it's a unified system connected through the central hub at the Ministry."
"What if the devices carried their own small magical reservoir?" Rowan suggested. "Something that regenerates on its own, sustains the connection without the user having to power it."
Nicholas nearly dropped his fork. "You're describing self-sustaining enchantment. That's... extraordinarily difficult. Most enchanted objects are powered by ambient magic or the user's magic. Creating an object that generates its own..."
"The Philosopher's Stone generates magic," Rowan pointed out. "It sustains the immortality effect indefinitely without external power."
"Yes, but the Stone is the culmination of decades of alchemical work and represents the perfection of matter itself!" Nicholas paused. "Though... I suppose in principle, a lesser version of the same idea might work. You wouldn't need anything close to what the Stone produces. Even a trickle, enough to maintain simple enchantments over time, that could be sufficient."
"That's fascinating," Perenelle said thoughtfully. "You'd need to incorporate alchemical principles into the enchantment itself. Create a device that undergoes constant internal transformation. A miniature alchemical cycle that produces small amounts of magical energy as a byproduct."
The conversation continued late into the evening, moving from communication devices to other potential innovations, to the ethical implications of democratizing powerful magic, to the resistance they'd likely face from established interests.
"The pure-blood families won't welcome changes that reduce their advantages," Perenelle warned. "If Muggleborns can access the same magical tools and knowledge as ancient families, the justification for blood hierarchy evaporates."
"Good," Rowan said. "That's exactly the point."
"Just be aware that they won't surrender power peacefully. You'll face opposition, possibly dangerous opposition."
"I'm prepared for that. Or I will be, eventually."