Front matter
Reading edition
A WHIRLING SPIRAL NEBULA, TYPICAL OF THAT FROM WHICH THE SUN AND PLANETS WERE PROBABLY EVOLVED
In the process of evolution the dense center becomes the controlling sun and the smaller spots of condensation form the planets. This particular nebula lies just under the end of the handle of the Big Dipper. It was photographed at Mt. Wilson Observatory.
THE WAYS OF THE PLANETS
BY
MARTHA EVANS MARTIN, A.M.
AUTHOR OF
“THE FRIENDLY STARS”
NEW YORK AND LONDON
HARPER & BROTHERS PUBLISHERS
MCMXII
COPYRIGHT, 1912, BY HARPER & BROTHERS
PRINTED IN THE UNITED STATES OF AMERICA PUBLISHED OCTOBER, 1912