Read it through once

A great tumult succeeded for some minutes, during which Miss Miller repeatedly exclaimed, “Silence!” and “Order!” When it subsided, I saw them all drawn up in four semicircles, before four chairs, placed at the four tables; all held books in their hands, and a great book, like a Bible, lay on each table, before the vacant seat. A pause of some seconds succeeded, filled up by the low, vague hum of numbers; Miss Miller walked from class to class, hushing this indefinite sound.