standing-room

— Each floor of the ark contained five thousand six hundred and one square yards, and the three floors sixteen thousand eight hundred and three square yards, the total standing-room of the ark. […] Let us not crowd Noah, but take the six thousand two hundred and sixty-six species of Lesson. Seven of each of these would give us forty-three thousand eight hundred and sixty-two birds, from the humming-bird, the little flying jewel, to the ostrich that fans the heated air of the desert, nearly three for every yard of standing-room in the ark.