Science

The micro-organisms of the soil

The Chemistry of Hat Manufacturing

The Le Sage Theory of Gravitation

Recreations in Astronomy

Illogical Geology, the Weakest Point in the Evolution Theory

Thunder and Lightning

The Kingdom of Man

Telescopic Work for Starlight Evenings

The Riddle of the Universe at the close of the nineteenth century

Pennsylvanian invertebrates of the Mazon Creek Area, Illinois: Eurypterida

Your Atomic Self

Outlines of the Earth's History: A Popular Study in Physiography

On Sulphonfluoresceïn and Some of Its Derivatives

A Practical Treatise on Gas-light

Plants Poisonous to Live Stock

Modern cosmogonies

The logic of modern physics

The Flying Saucers are Real

Respiration Calorimeters for Studying the Respiratory Exchange and Energy Transformations of Man

The Coal Measures Amphibia of North America