THE MUSIC OF THE SPHERES
Reading edition
A Nature Lover's Astronomy
BY
FLORENCE ARMSTRONG GRONDAL
NEW YORK THE MACMILLAN COMPANY 1926
All rights reserved
IN GRATEFUL APPRECIATION OF HIS KINDLY AND HELPFUL INTEREST THIS BOOK IS DEDICATED TO SAMUEL L. BOOTHROYD PROFESSOR IN CHARGE OF THE FUERTES OBSERVATORY CORNELL UNIVERSITY ITHACA, N. Y.