THESE huge arches, only made as arches to save concrete and to break the waves of the lake, are mightier than any Roman aqueduct, and more pictorial, yet soon they will be hidden almost to the top by the waters of the lake. Electric locomotives will run out to the farthest point, and from it, tow the ships into the lock. Beyond is Gatun Lake, and to the right the lines of the French Canal and Chagres River stretch to the horizon. Even while I was on the Isthmus the river and canal disappeared forever before the waters of the rapidly rising flood. All evidence of the French work beyond Gatun has vanished under water. I did not draw the Dam or the Spillway simply because I could not find a subject to draw, or could not draw it.