The Discovery of Kepler's Laws
An Epoch-making Astronomical Achievement
Features
Preparation of Pure Radium Salts
The Process of Fractionation Employed
International Standard Time
Its History and Its Recent Adoption in France
The Air-brake as Related to Proǵress in Locomotion—IV
The History of a Great Invention
Savingǵ Human Life in Mines
The Work of the United States Bureau of Mines
Eagǵle Hunting in China
A Lucrative Oriental Sport
Charles Darwin
The Justification of the Darwinian Theory
Bienaimés Proposed Ascension
Reclamation of the Southern Louisiana Wet Prairie Lands—I
The Mercadier System of Multiplex Teleǵraphy, French Studies of Insecticides
Eugenics and Genetics
“Good Breeding” and Its Significance
