The Popular Science Monthly, October, 1900, Vol. 57, May, 1900 to October, 1900Note F — CHAPTERS ON THE STARS. By Prof. SIMON NEWCOMB, U. S. N. VARIABLE STARS.Reading edition‘Astrophysical Journal’, Vol. VII, January, 1898.◇Copy noteReturn to CHAPTERS ON THE STARS. By Prof. SIMON NEWCOMB, U. S. N. VARIABLE STARS.