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TO BE PUBLISHED SOON 
A Study of Stellar Evolution: A Popular 
Account of [Modern [ethods of Astro- 
physical Research 
By GrorGE ELLERY HALE 
The purpose of this wrt is to tell sab the valor devel papas and decay of age bodies is 
studied in a modern observato The remarkable advances in astronomy during the second half o 
the nineteenth century, sackets ng the Seelicabi ent As great telescopes, the introduction of the spectro- 
Scope and the many discoveries made with its aid, and the results obtained through the use of photogra- 
phy, have given the oe of stellar a eapae a ee place in the work of many observatories. The 
Lal 
explanations of instruments and methods ccom i i 
panied by illustrations, and the most recent astro- 
peel photogr: lac ottaitieg with the rarer of the Yerkes Observatory are reproduced in a series 
The University of Chicago Press 
CHICAGO, ILLINOIS 
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