Translations for chaos in French

Here are paragraphs from public domain books translated:
All this is from my hurried notes taken at the time, which give little notion of the absolute chaos to which the assembly had by this time been reduced. So terrific was the uproar that several ladies had already beaten a hurried retreat. Grave and reverend seniors seemed to have caught the prevailing spirit as badly as the students, and I saw white-bearded men rising and shaking their fists at the obdurate Professor. The whole great audience seethed and simmered like a boiling pot. The Professor took a step forward and raised both his hands. There was something so big and arresting and virile in the man that the clatter and shouting died gradually away before his commanding gesture and his masterful eyes. He seemed to have a definite message. They hushed to hear it. Des notes cursives prises sur place ne sauraient rendre que d’une façon bien imparfaite le chaos qui régnait à ce moment dans l’assemblée. Épouvantées par le charivari, plusieurs dames avaient déjà battu précipitamment en retraite. De graves vieillards se haussaient au diapason des étudiants ; j’en vis, et des plus vénérables, qui, debout, le poing tendu, menaçaient l’impénitent professeur. La salle écumait et ronflait comme une bouilloire. Challenger avança d’un pas et leva la main. Il y avait quelque chose de si hautain, de si saisissant, de si viril dans son attitude, que, peu à peu, les bruits tombèrent au commandement de son regard et de son geste. Il réclamait le silence : on l’écouta.
The Lost World, by Arthur Conan Doyle Le Monde perdu, de Arthur Conan Doyle