Science

Bacteria

A Short History of Astronomy

A System of Pyrotechny

Recycling to Save the Earth

Embryology: The Beginnings of Life

Curiosities of Science, Past and Present

Experiments and Observations on the Following Subjects

First Lessons in Natural Philosophy for Beginners

Is that Fish in Your Tomato

The Practical Astronomer

Earthquakes and Other Earth Movements

Geology: The Science of the Earth's Crust

Experimental Determination of the Velocity of Light

Through a Microscope

Fossil Ice Crystals: An Instance of the Practical Value of “Pure Science”

The Kingdom of Man

On Sulphonfluoresceïn and Some of Its Derivatives

Synthesis of 2-methyl-4-selenoquinazolone, 2-phenylbenzoselenazole, and its derivatives

Evolution

Heads of Lectures on a Course of Experimental Philosophy: Particularly Including Chemistry