Science

Zetetic astronomy: Earth not a globe

Science and the modern world

Conversations on the Plurality of Worlds

The logic of modern physics

Astronomy and General Physics Considered with Reference to Natural Theology

On the Antiquity and the Unity of the Human Race

The dawn of astronomy

The Forces of Matter

The A B C of Relativity

On the Conservation of Force

Aether and Gravitation

A Guide to the Scientific Knowledge of Things Familiar

Mars and Its Canals

Marine Protozoa from Woods Hole

An Original Theory or New Hypothesis of the Universe

The Earth's Beginning

Phrenology Examined

Development of Gravity Pendulums in the 19th Century

Lectures on Stellar Statistics

Pyrotechnics