National Geographic : 1926 Apr
EXPLORING THE VALLEY OF THE AMAZON IN A HYDROPLANE 401 OCCASIONALLY TIIE IIYDROPLANE CAMERA WAS BROUGHT ASHORE TO PHOTOGRAPH DISTANT MOUNTAINS The interested spectators are Mayongong Indians. Sometimes, after the author had taken photographs of natives, he developed and printed small negatives overnight in order to show his subjects their pictures the next morning. ,411 TOASTING TIIE AERIAL CAMERA BEFORE TlHE DAY'S FLIGHT The atmosphere of the Tropics contains so much moisture that water condenses upon a cool glass surface. It was necessary, therefore, to heat the camera gently before the fire in the early morning, so that when it was installed in the hydroplane the lens would not fog.