ten o'clock
`` Why are there so many wide shelves all around the walls , Mr. Hardinian ? '' she asked at last . The young man smiled . `` If you will come some night at ten o'clock you will find a little street urchin , some homeless little fellow , tucked up in blankets asleep on each of those shelves , as you call their bunks . Maybe you do not know , but even in the bitterest winter weather many small boys sleep out in the streets or creep into doorways and huddle together to keep warm . That is , they used to before I came . Now they are all welcome in here . ''