Okay then, they were jumping right into questions it seemed. Ella wracked her brains, thinking back to her first lesson with Hadley last term. What were the two types of systems? She knew that one was pythagorean but the other...what was it? Something with a c maybe? She drummed her fingers absently on her parchment while she thought about the answer.

After several minutes of finger drumming, Ella had the answer she hoped was correct. The second year raised her hand in the air with a smile. "Professor, I think they're Pythagorean and Chaldean"