Being a collection of hints to teachers, parents, self-taught

students, and adults, and containing a summary or indication

of most things in Elementary Mathematics useful to be known.

1905. (Macmillan.) 4s. 6d. Net price, 3s. 5d.

LIFE AND MATTER

A discussion of the scientific foundations of religion; being

an answer to Haeckel, and a speculation concerning the

meaning of Life. 1905. (Williams & Norgate.) 2s. 6d. net.

MODERN VIEWS ON MATTER

Being the Romanes Lecture to the University of Oxford,