Aerodynamics, that was a good one, with any luck at all it had a small portion on theories of serpentine flight.
After that he was simply fingering the spines of the oldest books he could find in hopes of seeing something. He was struggling to get a book down from one of the upper shelves, without resorting to flying, and since he hated ladders. No matter how much practice he was getting with feet, the while concept of ladders was uncomfortable, and he felt like he’d put his foot through the spaces rather than the bars.
The book slid free and he had to struggle to catch it, stumbling back a step and bumping into a fellow student, a ghoul.
Viva Viola