—Second edition. 8vo. London, 1874. (In 1 volume.)
The Expression of the Emotions in Man and Animals. 8vo. London, 1872.
Insectivorous Plants. 8vo. London, 1875.
The Effects of Cross and Self Fertilisation in the Vegetable Kingdom. 8vo. London, 1876.
—Second edition. 8vo. London, 1878.
The different Forms of Flowers on Plants of the same Species. 8vo. London, 1877.
—Second edition. 8vo. London, 1880.
The Power of Movement in Plants. By Charles Darwin, assisted by Francis Darwin. 8vo. London, 1880.
The Formation of Vegetable Mould, through the Action of Worms, with Observations on their Habits. 8vo. London, 1881.
II.—LIST OF BOOKS CONTAINING CONTRIBUTIONS BY CHARLES DARWIN.