GEORGE C. COMSTOCK
Reading edition
DIRECTOR OF THE WASHBURN OBSERVATORY AND PROFESSOR OF ASTRONOMY IN THE UNIVERSITY OF WISCONSIN
NEW YORK D. APPLETON AND COMPANY 1903
Copyright, 1901
By D. APPLETON AND COMPANY
Reading edition
DIRECTOR OF THE WASHBURN OBSERVATORY AND PROFESSOR OF ASTRONOMY IN THE UNIVERSITY OF WISCONSIN
NEW YORK D. APPLETON AND COMPANY 1903
Copyright, 1901
By D. APPLETON AND COMPANY