XVIII
LAYING THE FLOOR OF PEDRO MIGUEL LOCK
THIS is the most monumental piece of work on the Canal, and the most pictorial. The huge approaches, quite different in form from Gatun—for all the locks have character, and the character of their builders—are only arches to save concrete. Here were men enough laying the concrete floor—others swarming over the gates not yet covered with their armor plate. Beyond is the lock just shown between the gates.
XIX
THE GATES OF PEDRO MIGUEL