>>6155372The onager and mangonel are obsolete now, though still cheaper and faster to build than the trebuchet. What interests you is the mobile parts of the engine; they are depicted with large, massive wheels that could probably be improved by using larger spoked wheels. The text also recommends that you use logs of wood to keep the engines in place when they fire.
It is a useful text, though some of the siege engines were already within your knowledge; still, you spend the next three hours carefully copying the schematics so you may give them to your siege engineer. When that's done, you return the scroll to the shelf. You also make a note to contact a wheelwright when the time is right.
>Try find Petroclys' works on the usage of alchemical subtances.>Look for the tome on naval artillery weapons>Pick the scroll on Dwarven terrace farming>Pick a random scroll>Go outside 