The Different Forms of Flowers on Plants of the Same Species

The Expression of the Emotions in Man and Animals

The Formation of Vegetable Mould through the Action of Worms

The Autobiography of Charles Darwin

Zoology of the Voyage of H.M.S. Beagle

The Structure and Distribution of Coral Reefs

Geological Observations on the Volcanic Islands

The Effects of Cross and Self Fertilisation in the Vegetable Kingdom

Geological Observations on South America

Movement and Habits of Climbing Plants

A manual of scientific enquiry : prepared for the use of Her Majesty's Navy and adapted for travellers in general