Science

The Jay, The Beech and the Limpetshell

Biomimetics

Schenk's Theory: The Determination of Sex

Pioneers of Evolution from Thales to Huxley

On the Border Territory Between the Animal and the Vegetable Kingdoms

Spectropia

Dinosaurs of Darkness

Einstein and the universe: A popular exposition of the famous theory

Bug Music: How Insects Gave Us Rhythm and Noise

Species and Varieties, Their Origin by Mutation

Agriculture for Beginners / Revised Edition

Rust, Smut, Mildew, & Mould: An Introduction to the Study of Microscopic Fungi

Weird Earth

The Energy of Slaves

Voyager Encounters Jupiter

The Insect Man

Studies in Spermatogenesis

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

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

Masters of Life and Universe