THE MUSIC
OF THE SPHERES

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.