North Wall n the north wall of the Museum are the departments of human knowledge. Aesculapius, the ancient Greek physician, sits teaching the science of medicine to the coming generations. Philosophy rests with her hand to her brow, trying to fathom the riddle propounded by the sphinx. Astronomy is depicted by the first astronomers, the Persian and the Arab, measuring the distance of the stars. Mathematics stands musing upon the geometric principles of the triangle in his hand.
Peace holds a green branch signifying plentiful crops.
Industry holds a wheel, and has an axe beside her. Internal Trade is represented by an Oriental merchant. International Commerce considers the model of a ship. Reflection or Meditation gazes at a human skull. Her foot is on the globe, signifying that she rules the world.