Sir Arthur Conan Doyle: The Lost World

Chapter 7: "To-morrow we Disappear into the Unknown" (continued)

"Not from me, sir!" exclaimed Professor Summerlee, heartily. "So long as there was another ship upon the Atlantic."

Challenger waved him away with his great hairy hand.

"Your common sense will, I am sure, sustain my objection and realize that it was better that I should direct my own movements and appear only at the exact moment when my presence was needed. That moment has now arrived. You are in safe hands. You will not now fail to reach your destination. From henceforth I take command of this expedition, and I must ask you to complete your preparations to-night, so that we may be able to make an early start in the morning. My time is of value, and the same thing may be said, no doubt, in a lesser degree of your own. I propose, therefore, that we push on as rapidly as possible, until I have demonstrated what you have come to see."

Lord John Roxton has chartered a large steam launch, the Esmeralda, which was to carry us up the river. So far as climate goes, it was immaterial what time we chose for our expedition, as the temperature ranges from seventy-five to ninety degrees both summer and winter, with no appreciable difference in heat. In moisture, however, it is otherwise; from December to May is the period of the rains, and during this time the river slowly rises until it attains a height of nearly forty feet above its low-water mark. It floods the banks, extends in great lagoons over a monstrous waste of country, and forms a huge district, called locally the Gapo, which is for the most part too marshy for foot-travel and too shallow for boating. About June the waters begin to fall, and are at their lowest at October or November. Thus our expedition was at the time of the dry season, when the great river and its tributaries were more or less in a normal condition.