But no less a Confirmation of these Notions may we have from the _Cure_; as to which it is observable, that the _Tarantati_ have no Inclination to _dance_ before they hear the Musick; for being ask’d to do it, they answer, it is impossible, they have no Strengh. As for the Reason therefore of their starting up at the first Noise of the Instrument, we must reflect upon what we have just now been saying concerning the Cause of the Motions of the Body in a _Delirium_; and consider withal, that muscular Motion is no other than a Contraction of the Fibres from the Arterial Fluid making an Effervescence with the Nervous Juice, which by the light Vibration and Tremor of the Nerve, is derived into the Muscle. And thus we have a twofold Effect and Operation of Musick, that is, both upon the Mind and Body. For a brisk Harmony excites lively _Species_ of _Joy_ and _Gladness_, which are always accompany’d with a more frequent and stronger Pulse, or an increased influx of the Liquor of the Nerves into the Muscles, upon which suitable Actions must immediately follow; and if we remember what we before hinted, that People in this Country are sprightly and ready to Exercise, and that in such a state of the Fluids as we have describ’d, a slight Occasion presents as strong _Species_, as a greater can at another time: The Influence of Musick on the _Mind_ will appear to be so much the more powerful and certain. As for the _Body_, since it is sufficient for the purpose of putting the Muscles into Action, to cause those _Tremors_ of the Nerves by which their Fluid is alternately dropt into the moving Fibres; it is all one whether this be done by the determination of the Will, or the outward _Impulsions_ of an _Elastic_ Fluid; such is the _Air_; and that Sounds are the _Vibrations_ of It, is beyond dispute. _These_ therefore rightly modulated may shake the Nerves as really as the _Imperium Voluntatis_ can do, and consequently produce the like Effects. That This is so, besides what we shall add anon, we may be convinced by a Story which M^r. _Boyle_ (54) relates out of _Scaliger_, of a Knight of _Gascony_ whom the sound of a _Bagpipe_ would unavoidably force to make Water; for this Secretion we know is regularly the Effect of an Arbitrary Contraction of the Muscle of the Bladder. The obstinate continuing of the _Tarantati_ in this Exercise, is doubtless in a great Measure owing to the strong Opinion they have of receiving Advantage from it, being incouraged by the By-standers, and having always believed, and been told, that it was the only Cure in these Cases.