11/16 Northeast from this lay _Oceanus Procellarum_, the Ocean of Tempests, the most extensive of all the plains on the lunar disc, embracing a surface of about half a million of square miles, its centre being in 10 deg. north and 45 deg.east.From its bosom those wonderful mountains _Kepler_ and _Aristarchus_ lifted their vast ramparts glittering with innumerable streaks radiating in all directions. |