We made a march that day which totaled some two-and-twenty miles, without any change in our prospects. I may mention that our aneroid shows us that in the continual incline which we have ascended since we abandoned our canoes we have risen to no less than three thousand feet above sea-level. Hence there is a considerable change both in the temperature and in the vegetation. We have shaken off some of that horrible insect life which is the bane of tropical travel. A few palms still survive, and many tree-ferns, but the Amazonian trees have been all left behind. It was pleasant to see the convolvulus, the passionflower, and the begonia, all reminding me of home, here among these inhospitable rocks. There was a red begonia just the same color as one that is kept in a pot in the window of a certain villa in Streatham⁠—but I am drifting into private reminiscence.

That night⁠—I am still speaking of the first day of our circumnavigation of the plateau⁠—a great experience awaited us, and one which forever set at rest any doubt which we could have had as to the wonders so near us.