A Questionable Medium.—All astronomical phenomena are viewed through this earth's atmosphere, and in all ways measured except in distance by things earthly. There are said to be seventy-one elementary substances on this earth enumerated by chemists. Thirty-two of these, we are told, are found in the sun, with a trace of ten or fifteen more. But if these sun elements were ascertained, measured, and analyzed outside of this atmosphere, the result might be vastly different.