whom reason is by no means deficient, phenomena sometimes occur almost as vivid as those of disease in other persons. Wordsworth, speaking of the impressions derived from certain external objects, says: ------------ on the mind They lay like images, _and seemed almost To haunt the bodily sense_! Again, in his verses recording his impression of the beauty of a bed of daffodils, he says: And oft, _when on my couch I lie_, [dozing?] They _flash_ before that inward eye Which is the bliss of solitude. These words are nothing more, we believe, than a simple and unexaggerated statement of a mental phenomenon. Enough has now been said to shew, that in a certain condition of the brain, when it is deprived of the wakefulness and activity necessary for the free use of reason, the effects of imagination may far exceed any that are displayed during a normal, waking state of the intellectual faculties. The question now remains: Are the means employed by the professors of electro-biology sufficient to produce that peculiar condition to which we refer? We believe that they are; and shall proceed to give reasons for such belief. 3. What are these means? or rather let us ask, 'Amid the various means employed, which is the real agent?' We observe that, in the different processes by which--under the names of electro-biology or mesmerism--a peculiar cerebral condition is induced, such means as the following are employed:--Fixed attention on one object--it may be a metallic disk said to have galvanic power, or a sixpence, or a cork; silence, and a motionless state of the body are favourable to the intended result; monotonous movements by the experimenter, called 'passes,' may be used or not. The process may be interrupted by frequent winking, to relieve the eyes; by studying over some question or problem; or, if the patient is musical, by going through various pieces of music in his imagination; by anything, indeed, which tends to keep the mind wakeful. Now, when we find among the various means _one_ invariably present, in some form or another--_monotony of attention producing a partial exhaustion of the nervous energy_, we have reason to believe that _this_ is the real agent. But how can the 'fixed gaze upon the disk' affect reason? Certainly, it does not immediately affect reason; but through the nerves of the eye it very powerfully operates on the organ of reason, _the brain_, and induces an impressive, passive, and somnolent condition.