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VITALISM : A BRIEF HISTORICAL AND CRITICAL REVIEW. 331 17. Allt/i'iiii iii' Physiologit', Mnx Verworn (Jena, 1895). 18. Tli, Mi,i>i*,,i n f Man, D. A. Gorton (New York, 1893). 19. "The Limits of Natural Knowledge," trans, in Nature,, vol. xvi., Carl von Xiigeli (London, 1877). 20. I'rim-iples of Human Physiology, V. B. Carpenter (London, 1844). 21. The Scientific Papers of James Clerk Maxwell (Cambridge, 1890). 22. Protoplasmic Theory a/Lift, John Drysdale (London, 1879). 23. Text-book of Physiology, M. Foster (London, 1889). 24. Berichte d. deutsch. chem. Qesell. (passim), Emil Fischer (Berlin 1890-4). 25. Untersuchungcn fiber mikr. Schiiume u. d. Protoplasma, O. Biitschli (Leipzig, 1892). 26. Theory of Panplasm : read to Sections D and K of British Associa- tion, C. S. Minot (Liverpool, 1896). 27. Biological Problems of To-day, O. Hertwig, Eng. trans. (London, 1 896). 28. Essays on the Powers of Man, Thomas Reid (Edinburgh, 1803). 29. Kritik der reinen Vernunft, Immanuel Kant, Eng. trans. (London 1893). 30. Microcosm us, B. H. Lotze, Eng. trans. (Edinburgh, 1885). 31. Art "Psychology," Encycl. Brit., James Ward (Edinburgh, 1885). In the historical part of the essay the writer has frequently availed himself of, and consulted references in : Versuch einer pragmatischen Geschichte d. Arzneykunde, Kurt Sprengel (Halle, 1821). History of the Literature of Ancient Oree.ce, K. O. Miiller, Eng. trans. (London, 1875). A History of Philosophy, 3. E. Erdmann, Eng. trans. (London, 1890). (Conclusion.)