(With Horst information, I'll go back to the library to expand my options before I can speak with Eule and Renatus. if I can see the old aquam (and rego even possibly muto), and if primers can be borrowed (intelligo and animalem) and if some books are considered less valuable (and therefore easier to borrow) because they're written in Arabic. I'll also ask if the spell "Sculpt the Living Water" is available (probably not it's an invention from the prima Falke) or other similar spells that could me used to trap the gas from the souces, i'll also look for spells to see clearly in water, to swim better or move better in water and to resist cold from the water while diving (all of them working in Ibis form ofc) . I'll also try to meet Ursula to arrange some clothes that would fit the bog's humidity yet remain dignified (i'll try to bring Stefan if he's available to make the translation) and also Fabianus to ask what kind of lab equipment can be purchased to specialize mine at the chapter House and is there's a stock of materials available to make enchanted devices.)