Treatise on natural philosophy,

"The most important part of the labour of editing part II. has been borne by Mr. G.H. Darwin ... [who] has made valuable contributions to the work."

The principles of moral and political philosophy.

Mode of access: Internet.

Course of the history of modern philosophy.

Tr. of: Cours de 'histoire de la philosophie moderne.

The philosophy of religion in England and America

Mode of access: Internet.

Early Greek philosophy /

Mode of access: Internet.

The philosophy of religion; lectures written for the Elliott lectureship at the Western theological seminary, Pittsburgh, Penna., U. S. A., 1916,

Mode of access: Internet.

Comte's philosophy of the sciences: being an exposition of the principles of the Cours de philosophie positive /

Preface dated 1853.

The elements of intellectual philosophy /

Includes references.

The witness to immortality in literature, philosophy and life,

Mode of access: Internet.

The philosophy of English poetry.

Mode of access: Internet.