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.
Broca, Paul, “The Troglodytes or Cave-Dwellers of the Valley of the Vézère,” Smithsonian Report, 1872, pp. 310-347.
“Man as the Contemporary of the Mammoth and the Reindeer in Middle Europe,” translated by C. A. Alexander, for the Smithsonian Institution, from “Aus der Natur: die neuesten Entdeckungen auf dem Gebiete der Naturwissenschaften,” Leipzig, 1867, Smithsonian Report, 1867, pp. 335-362.
Wilson, Thomas, “Anthropology at the Paris Exposition in 1889,” Smithsonian Report, 1890, pp. 641-680.
Classifications. In reading the above books for the purpose of supplementing the first three numbers of this series, it must be remembered that no uniform system of classification has been adopted and that the reader must become familiar with several in order to be able to use the reference books most advantageously. To help the reader in getting a working idea of the different classifications the following summaries may be of value:
The progress of mankind is classified by Professor W. Boyd Dawkins into the following periods: