A new system of the spleen, [electronic resource] : vapours, and Hypochondriack Melancholy: wherein all the decays of the nerves, and lownesses of the spirits, are mechanically accounted for. To which is subjoin'd, A discourse upon the Nature, Cause, and Cure, of Melancholy, Madness, and Lunacy. With a particular dissertation on the Origine of the Passions; the Structure, Mechanism, and Modulation of the Nerves, necessary to produce Sensation in Animal Bodies. To which is prefix'd, A philosophical essay concerning the Principles of Thought, Sensation, and Reflection; and the Manner how those noble Endowments are disconcerted under the foregoing Diseases. By Nicholas Robinson, M.D. and of the College of Physicians, London.