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Winds gusting through a vast tinderbox of undergrowth made the fire balloon in size and merge with a smaller blaze.

As soon as it did, a fire balloon was sent up.

Looking where her mother pointed, Martine saw a great fire balloon soaring slowly into the air.

A body of the students who had imbibed from the Professor of Natural Philosophy an enthusiasm about aerostation, proposed to raise money for the sufferers by making and exhibiting a huge fire balloon.

A religious Order is like a fire balloon, which requires four conditions in order to rise into the clouds amidst the applause of the spectators.