The Bird Boys' Aeroplane Wonder

Nobody had ever been able to climb to the summit of that precipitous height, and when the Bird boys landed there once from their aeroplane and planted a flag above the nest of the white-headed eagles they achieved a great triumph. The incident to which Elephant alluded had been brought about during a sudden thunder storm that had caught the rival aeroplanes while making a flight to the top of the mountain; and at that time the Bird boys were indeed placed in a position to save the lives of Percy Carberry and his comrade Sandy; but since gratitude was a foreign element in the make-up of the jealous rival, he had never shown that he meant to change his tactics toward Frank and Andy.