Science

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

The New Cosmic Story

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

A Cultural History of Heredity

Bug Music: How Insects Gave Us Rhythm and Noise

Amphibians and Reptiles in Captivity

Species and Varieties, Their Origin by Mutation

A Pictorial Atlas of Fossil Remains

Agriculture for Beginners / Revised Edition

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

Young Engineer's Guide

Weird Earth

The Energy of Slaves

Voyager Encounters Jupiter

Kinetic Theories of Gravitation

The Insect Man