 
A classic collection of inspiring biographies profiling some of the world’s greatest scientific pioneers. Sarah K. Bolton brings to life the stories of brilliant minds whose discoveries shaped modern science and changed the way we understand the world. From groundbreaking astronomers and physicists to trailblazing chemists and naturalists, these portraits reveal not only scientific achievements but also the perseverance and character of the men behind them. Originally published in the late 19th century, this timeless work remains an engaging introduction to the history of science and the human spirit of discovery. A must-read for students, educators, and lovers of biography, history, and science.