Noonday Rest in Marble Canyon ..[239]
View of Marble Canyon from Vermilion Cliffs . . [240]
Adobe Walls, Zuñi .....[243]
At the Mouth of the Little Colorado ..[246]
Walls of Gneiss ......[249]
Running a Rapid ......[250]
Head of the Grand Canyon ....[252]
The Inner Gorge ......[254]
Signal of Discovery or Alarm . . . . . [257]
Signal, "Who are you?" Answer, "Pani" . . . ...258