Show c Causes uses of Climatic Change Tyndall 1 us one ono of the first to suggest suggest suggest sug sug- gest that the cause of the great glent changes that the climate of the earth has lias un undergone In the past might conceivably con con- be the formation of thin can cnn canopies ople of gus gas In the atmosphere capable ca en- pubis pable of or transmitting the luminous heat bent of the sun but Impervious to tho the dark heat rn rays s 's radiated back from the tho earth Wheeler seeking a new explanation of Df the glacial periods suggests that such canopies could be bo formed b by the fall of rings of matter external to fo the atmosphere Being ar afterward er resol resolved cd Into belts they might give rise to strong climatic zones until their final disappearance IJ by Ely descent to the earth In the tae form of dust He lie picturesquely suggests that primitive man saw the latest cloud belts which gave guvo rise riso to the myths of serpents twined about the earth |