46. Matter and Energy. F. Soddy, F.R.S.
47. Buddhism. Mrs Rhys Davids.
48. The American Civil War. (Maps.) Prof. F. L. Paxson.
49. Psychology. The Study of Behaviour. Prof. W. McDougall.
50. Nonconformity, Its Origin and Progress. Principal W. B. Selbie.
51. Warfare in England. (With Maps.) Hilaire Belloc, M.A.
52. Great Writers of America. Profs. W. P. Trent and J. Erskine.
53. The Making of the Earth. (With 38 Maps and Figures.) Prof. J. W. Gregory, F.R.S.
54. Ethics. G. E. Moore, M.A.