We know something of the Conditions upon which the exercise of these Powers depends--or by which it is influenced. Thus we know, that for seeing, we must possess that wondrous piece of living mechanism, the eye, in its healthy condition. We know further, that a delicate and complicated system of nerves, which convey the visual impressions from the eye itself to the seeing power, must be healthy and unobstructed. We know that a sound and healthy state of the brain is necessary to these manifestations--that accidents befalling the Brain totally disorder the manifestations of these powers--turning the clear self-possessed mind into a wild anarchy--a Chaos--that other accidents befalling the same organ suspend all manifestations. We know that sleep stops the use of many powers--and that deep sleep--at least as far as any intimations that reach our waking state go--stops them all. We know that a nerve tied or cut stops the sensation--stops the motory volition which usually travels along it. We know how bodily lassitude--how abstinence--how excess--affects the ability of the mind to exert its powers. In short, the most untutored experience of every one amongst us all shows bodily conditions, upon which the activity of the faculties which are seated in the mind, depends. And within the mind itself we know how one manifestation aids or counteracts another--how Hope invigorates--how Fear disables--how Intrepidity keeps the understanding clear-- NORTH. You are well illustrating Butler, Talboys. Then, again, we know that _for Seeing_, we must have that wonderful piece of living mechanism perfectly constructed, and in good order--that a certain delicate and complicated system of nerves extending from the eye inwards, is appointed to transmit the immediate impressions of light from this exterior organ of sight to the percipient Mind--that these nerves allotted to the function of seeing, must be free from any accidental pressure; knowledge admirable, curious, useful; but when all is done, all investigated, that our eyes, and fingers, and instruments, and thoughts, can reach--_What_, beyond all this marvellous Apparatus of seeing, is _That which sees_--what the percipient _Mind_ is--that is a mystery into which no created Being ever had a glimpse. Or what is that immediate connexion between the Mind itself, and those delicate corporeal adjustments--whereby certain _tremblings_, or other momentary changes of state in a set of nerves, upon the sudden, turn into Colours--into Sight--INTO THE VISION OF A UNIVERSE. SEWARD. Does Butler say all that, sir? NORTH. In his own dry way perhaps he may. These, my friends, are Wonders into which Reason looks, astonished; or, more properly speaking, into which she looks not, nor, self-knowing, attempts to look. But, reverent and afraid, she repeats that attitude which the Great Poet has ascribed to "brightest cherubim" before the footstool of the Omnipotent Throne, who