Mental discipline in education, [by E.L. Youmans]--On the importance of the study of physics, by J. Tyndall.--On the educational claims of botanical science, by A. Henfrey.--On the method of studying zoology, by T.H. Huxley.--On the importance of the study of physiology, by J. Paget.--Observations on the education of the judgment, by [M.] Faraday.--On the influence of the history of science upon intellectual education, by W. Whewell.--On the importance of the study of economic science, by W.B. Hodgson.--On political education, by H. Spencer.--On early mental training and the studies best fitted for it, by F.A.P. Barnard.--The development of ideas in physical science, by J. von Liebig.--Observations on the scientific study of human nature, by E.L. Youmans.--Appendix [Extracts]