"Enough people think it important that some died for this picture." Cal handed the book to Pentam. "I burned the original, then tried to recreate it from memory. Don't tell anyone about this. I mean it, not a soul! Please, see if you can figure it out, Pentam."

Pentam looked through the book again.

"Don't let it stop you from working on your thesis." Crysabel wagged a finger at Pentam.

"I'm studying the effect of acid on some metals, so I've built a battery since it ...