The _Benefit_ from Musick is not only their Dancing to It, and so evacuating by _Sweat_ a great Part of the Inflammatory Fluid; but besides this, the repeated Percussions of the Air hereby made, by immediate Contact shaking the Contractile Fibres of the Membranes of the Body, especially those of the Ear, which being continuous to the Brain, do communicate their Tremblings to its Membranes and Vessels; by these continued Succussions and Vibrations, the _Cohæsion_ of the Parts of the Blood is perfectly broken, and its _Coagulation_ prevented; so that the Heat being removed by Sweating, and the Coagulation by the Contraction of the Muscular _Fibrillæ_, the wounded Person is restored to his former Condition. If any one doubts of this force of the _Air_, let him consider that it is in _Mechanics_ (55) Demonstrated, that the smallest _Percussion_ of the smallest Body, can overcome the resistance of any great Weight which is in Rest; and that the Languid Tremor of the Air, which is made by the Sound of a Drum or Trumpet, may shake the vastest and strongest Edifices. But besides all this, We must allow a great deal to the _determinate Force_, and particular _Modulation_, of these trembling Percussions; for contractile Bodies may be acted upon by one certain Degree of Motion in the ambient Fluid, tho’ a greater Degree of it differently qualified may produce nothing at all of the like Effect; this is not only very apparent in the common Experiment of Two String’d Musical Instruments tuned both to the same Heigth, the Strings of the one being struck upon, those of the other will found, and yet a much greater Motion of the Air may not Cause any sensible Vibration at all in the same Chords; but also by the _Trick_ which many have of finding the Tone or Note peculiarly belonging to any _Wine Glass_, and by accommodating their _Voice_ exactly to that Tone, and yet making it loud and lasting, they will make the Vessel tho’ not touch’d, first to Tremble, and then Burst; which it will not do if their Voice be but a little eithet too low or too high. This last Consideration makes it no very difficult matter to conceive the reason, why different Persons, infected with this Venom, do require oftentimes a different sort of Musick in order to their Cure, in as much as their Nerves and _Distractile_ Membranes have differing _Tensions_, and consequently are not in like manner to be acted upon by the same _Vibrations_. Nor are We to wonder at the Oddness of this Method and Practice; for _Musick_, altho’ it be Now-a-days applied to quite different Purposes, was anciently made great Use of for the removing of many, and those too some of the most difficult and obstinate Diseases.