The best results will come from the use of this book if the teacher will give as careful attention to carrying out the suggestions under “Things to Think About” and “Things to Do” as she does to the study of the book itself. In this way she can help the child make vital relations between the study of nature on the one hand, and man and his works on the other. _References_: Teachers and parents who wish to read books written by specialists who have devoted years to the study of the period under consideration, will find the following list of value: _1. Books._ Clodd, Edward, _The Story of Primitive Man_. New York: D. Appleton & Co. Dawkins, W. Boyd, _Early Man in Britain_. New York: The Macmillan Company. Dawkins, W. Boyd, _Cave-Hunting_. New York: The Macmillan Company. Evans, Sir John, _Ancient Stone Implements in Great Britain and Ireland_. New York: D. Appleton & Co. Figuier, Guillaume Louis, _Primitive Man_. New York: D. Appleton & Co. Geikie, Archibald, _Prehistoric Europe_. London: Edward Stanford. Girod et Massénat, _Les Stations L’Age du Renne_. Paris: Librairie J.-B. Ballière et Fils. (This deals with the later cave-men.) Gummere, Francis Barton, _Germanic Origins_. New York: Charles Scribner’s Sons. Hutchinson, H. N., _Prehistoric Man and Beast_. New York: D. Appleton & Co. Hutchinson, H. N., _Extinct Monsters_. New York: D. Appleton & Co. Joly, Nicholas, _Man Before Metals_. New York: D. Appleton & Co. Lartet and Christy, _Reliquiæ Aquitanicæ_. London: Williams & Norgate. Lubbock, Sir John, _Prehistoric Times_. New York: D. Appleton & Co. Mason, Otis Tufton, _Origins of Invention_. New York: Charles Scribner’s Sons. Nadaillac, Marquis de, _Prehistoric Peoples_, pp. 79-112, 127-132. New York: Putnam’s Sons. Smith, Worthington G., _Man, the Primeval Savage_. London: Edward Stanford. Starr, Frederick, _Some First Steps in Human Progress_. Springfield, Ohio: Chautauqua Press, 1901. Stoddard, James, _The Seven Sagas of Prehistoric Man_. London: Chatto & Windus. Taylor, Isaac, _Origin of the Aryans_. New York: Charles Scribner’s Sons. Tylor, E. B., _Anthropology_. New York: D. Appleton & Co. Waterloo, Stanley, _The Story of Ab_. New York: Doubleday, Page & Co. Wilson, Sir Daniel, _Prehistoric Man_. New York: The Macmillan Company. Wright, G. F., _Man and the Glacial Period_. New York: D. Appleton & Co. Worsæ, J. J. A., _Industrial Arts of Denmark_. London: Chapman & Hall. _2. Magazine Articles._ Barton, Julien, and Sheppard, W. L., “Eighty Miles in Indiana Caves,” _Scribner’s Magazine_, Vol. XIX., pp. 875-888. Broca, Paul, “The Troglodytes or Cave-Dwellers of France,” _Popular Science Monthly_, Vol. II., pp. 699-708. Larrabee, W. H., “Cave-Dwellings of Men,” _Popular Science Monthly_, Vol. XLI., pp. 27-45. Oswald, Felix L., “Modern Troglodytes,” _Popular Science Monthly_, Vol. XII., pp. 37-46. Rau, Charles, “The Stone Age in Europe,” _Harper’s Magazine_, Vol. L., pp. 681-690. _3. Government Reports._