"His study was but little in the Bible." Throughout this inquiry, the province of the Theologian has never been invaded:--it has been my humble toil to collect and concentrate the scattered rays which emanate from natural reason,--a pale phosphoric light, and "uneffectual" glow, compared with the splendid and animating beams, which issue from the source of divine communication. As the object of these contributions, has been principally to convey my opinions, concerning the formation of the human mind, from the superior capacities that man possesses, many subjects have been left untouched, which, in similar works, urge an important claim to the attention of the reader. Among these neglected articles, the IMAGINATION is the chief omission:--of which many authors have treated so copiously, and so well. According to my own views, the consideration of this faculty was not essential to the outline that has been traced;--and it has been rather deemed a graceful embellishment, than a constituent pillar of the edifice of mind. This gay attirer of thought, that decks passion and sentiment, is also the prolific parent of fiction;--and justly banished from the retreats of sober demonstration.--To the science of numbers,--to mathematical precision, and to the whole range of experimental philosophy,--Imagination does not lend her glowing and gaudy tints. No vestiges of her colouring can be discovered in Divine ordinances, or in the systems of human jurisprudence:--neither in the Ten Commandments nor in the Statutes at Large. Imagination may indeed enliven the cold pages of historical narrative, and blend the "Utile Dulci"--but even here she is a profane intruder: and a vigilant eye must be directed, lest, in some unguarded moment, her seductive blandishments should decoy the nakedness of truth. A sedate and unambitious recorder of facts, does not presume to describe her regions, or to enumerate her attributes. That delightful task must be performed by her votaries, "The poet, the lunatic, and the lover;" nor should the Orator be excluded from his fair participation and kindred alliance with this airy and fascinating group. If the present essay should conform to nature, and be founded in truth,--should it assist the young inquirer, and more especially the medical student,--for whom no compendium of the science of mind has been hitherto prepared; my own expectations will be fully answered; and this scantling may probably lead some more capable person to an extensive investigation, enlarged comprehension, and luminous arrangement of the phenomena of the human intellect. JOHN HASLAM. 57. Frith-Street, Soho-Square, 1st November, 1819. CONTENTS. Page Perception 1 Memory 16