Drinking the Bath-Waters too long, that vertiginous Rotation was so increas’d, that I was laid up for a Month with it, being scarce able to go about without Staggering like a Drunken Man; this, considering the Strength I had notwithstanding, made it reasonable to suspect, as most that I consulted did, that there might be some Mercurial Particles lodg’d in some Excretory Ducts of my Brain, but this Extremity abated, and I remained Healthy under that Giddiness for several Years, till happening once to be more indispos’d than usually, upon the taking of a Chalybeate, the Humour struck deeper into the Nerves of the Pectoral Muscles, so that I found my Shoulders sometimes begin to be contracted involuntarily, and upon walking, I found a Shortness of Breath, which I could plainly discern, was caus’d _ab extra_, that is, by the Preternatural Pressure of those Muscles, upon my Breast, which I have sometimes resisted so far, when it has happen’d to come upon me in the Streets, before I could get to a House that I knew, that it has made my Eyes flash, and brought other Epileptick Symptoms upon me, in so much that I have been forc’d to take into a Shop, and desire leave to rest me for a time. These things continued on me a Year or more, during which time, if I had then known the Prevalency of Riding, I might have prevented a long Scene of Sickness; for declining under these Spasms of my Breast, I was at length quite confin’d to my Home, for near Three Months, all the while growing worse and worse, in Spite of the Power of any Medicines I took; when it happen’d that I was casually directed to the Use of Riding by the great Alteration I found in me, upon being one Day carried out in a Coach about a quarter of a Mile, when I was in that low Condition, that made me reflect on some of Dr. _Sydenham_’s Notions, which, like others, I had before slighted and disregarded, and I determined to try what Riding would do; in Order to which, I remov’d to _Hamstead_ for the Conveniency, where I rode at least twice a Day for the Space of Seven Weeks, without so much as intermitting one day; and I had Encouragement enough to keep close to it; for I found as Manifest a Progress in my Recovery, as ever was discern’d in any thing that is either Natural or Artificial; and I can’t here omit one thing very Remarkable, and which gave me the greatest Assurance of Success, and which shews beyond Contradiction, how peculiar this Exercise is to Cases of the Nerves; after I began to Ride, I found constantly upon the Use of that Exercise, a Tingling in the Ends of my Fingers, which was accompanied with a Sense of a gentle glowing Heat; and as I grew stronger, and persisted in those Means, I perceiv’d this Sensation proceed farther, for then I felt it in the Crown of my Head, and at length in my Tongue, in my Eyes, and at last all over my Body. This I acquainted my Physician with, who thought it a certain Pledge of my Recovery, as being assur’d that it was caus’d by the Spirits