It is very easy to conceive, from the extreme Subtlety of this Medicine, that it must produce many excellent Effects in such Diseases as those above mentioned, as it is converted into Vapour by a much less Heat than the common Animal One; so that being swallowed, it can hardly subsist in any Part of the human Body under any Form but that of an extremely penetrating volatiliz'd Vapour; and it is perceptible by it's Smell, as it passes thro' the Pores of the Skin, several Hours, after taking; so that it's stay in the Body is longer, and, it's Effects there more durable, than might be expected from such a subtle Substance. Notwithstanding the extreme Subtlety of the AETHER, it is perfectly innocent and safe to take, as it contains nothing that is acrimonious or corrosive; so that it may be given even to the youngest Children without Hesitation. It neither purges nor vomits; nor does it encrease any of the sensible Evacuations, except that of Urine, and sometimes that of Sweat, if taken when in Bed; but as it is so distinctly perceived by the smell passing thro' the cutaneous Pores of those who take it, it is probable that it encreases insensible Perspiration. Another observable Property in this Medicine is, that it does not coagulate or thicken the Serum of the Blood, but thins it; and therefore has direct contrary Effects to all the common Spirituous Compositions, when either taken inwardly, or externally applied, and is essentially different from the most subtiliz'd Vinous Spirits; for tho' Spirit of Wine is used in making it, yet it is so far decomposed by the Process, that it's Nature is entirely changed. In consequence of this Quality in the AETHER, the Publisher has successfully dissolved some particular obstinate Tumours, by applying it to them, when other Means have failed.----This Hint He hopes will not pass unnoticed by the Gentlemen of the Faculty, as it is evident no Application whatever can equal it in Subtlety and Dissolving Power. The Medicine so much celebrated in _Germany_, and so frequently commended and used in Practice by the late famous Professor _Hoffman_, under the Title of his _Liquor Mineralis Anodynus_, was nearly of the same Nature with the AETHER, but not so powerful, nor so highly subtilized.