Relative Masses of Binary Stars is a scientific book written by Stephen Marshall Hadley and published in 1905. The book is a detailed analysis of the masses of binary stars, which are two stars that orbit around a common center of mass. The author presents a comprehensive study of the methods used to determine the masses of these stars, including spectroscopic and photometric methods. The book also includes a detailed discussion of the various types of binary stars and their properties, such as their orbits, periods, and eccentricities. Hadley provides a thorough analysis of the data collected on binary stars up to the time of publication, and the book is considered a significant contribution to the field of astronomy. Overall, Relative Masses of Binary Stars is a valuable resource for astronomers and astrophysicists interested in the study of binary stars and their properties.This scarce antiquarian book is a facsimile reprint of the old original and may contain some imperfections such as library marks and notations. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions, that are true to their original work.