Gulp!...that's what Cris did, when he saw his Potions Master start to vanish some of his fellow classmates potions. He fought the urge to reach up and cover his cauldron with his body...just in case the professor decided to do the same with his. So when Professor Culloden started to give out the next set of instructions, Cris breathed a sigh of relief.
No vanishing meant that he was still on the right track. And since he still wanted to remain on track, Cris quickly picked up his quill and copied down the next set of instructions in his potions journal.
Placing his quill down on his workstation, Cris picked up the bowl containing his grated unicorn horn and emptied its contents into his cauldron. Placing the bowl down, Cris pulled out his wand, and began drawing an arrow pointing to the right with his wand over the cauldron.
What were they supposed to do next? Cris first updated his journal before sitting back and waiting patiently for Professor Culloden to tell them.