The other case, as related by Van Swieten, in his commentaries upon Boerhaave, is that of a learned man, who had studied, till be fancied his legs to be of glass: in consequence of which he durst not attempt to stir, but was constantly under anxiety about them. His maid bringing one day some wood to the fire, threw it carelessly down; and was severely reprimanded by her master, who was terrified not a little for his legs of glass. The surly wench, out of all patience with his megrims, as she called them, gave him a blow with a log upon the parts affected; which so enraged him, that he instantly rose up, and from that moment recovered the use of his legs.--Was reason concerned any more here; or was it not rather one blind impulse acting against another? Imagination has, unquestionably, a most powerful effect upon the mind, and in all these miraculous cures, is by far the strongest ingredient. Dr. Strother says, "The influence of the mind and passions works upon the mind and body in sensible operations like a medicine, and is of far the greater force than exercise. The countenance betrays a good or wicked intention; and that good or wicked intention will produce in different persons a strength to encounter, or a weakness to yield to the preponderating side." Dr. Brown says, "Our looks discover our passions, there being mystically in our faces certain characters, which carry in them the motto of our souls, and, therefore, probably work secret effects in other parts." This idea is beautifully illustrated by Garth in his Dispensatory, in the following lines:-- "Thus paler looks impetuous rage proclaim, And chilly virgins redden into flame. See envy oft transformed in wan disguise, And mirth sits gay and smiling in the eyes, Oft our complexions do the soul declare, And tell what passions in the features are. Hence 'tis we look the wond'rous cause to find, How body acts upon impassive mind." On the power and pleasure of the imagination, from the pleasures and pains it administers here below, Addison concludes that God, who knows all the ways of afflicting us, may so transport us hereafter with such beautiful and glorious visions, or torment us with such hideous and ghastly spectres, as might even of themselves suffice to make up the entire heaven or hell of any future being. DOCTRINE OF EFFLUVIA--MIRACULOUS CURES BY MEANS OF CHARMS, AMULETS, ETC.