The air became oppressively heavy, and…
source date: 1891
availability: public-domain

The air became oppressively heavy, and breathing was difficult. Many of the infant Cocopah Indians were asphyxiated. Suddenly a crash of thunder and flashing lightning clear- ed the atmosphere and the poor Indians were hopeful that all danger had passed when the water of the river became agitated and great clouds of mist arose hundreds of feet.