I hesitated long before I put this theory to the test of practice. I knew well that I risked death; for any drug that so potently controlled and shook the very fortress of identity, might, by the least scruple of an overdose or at the least inopportunity in the moment of exhibition, utterly blot out that immaterial tabernacle which I looked to it to change. But the temptation of a discovery so singular and profound at last overcame the suggestions of alarm. I had long since prepared my tincture; I purchased at once, from a firm of wholesale chemists, a large quantity of a particular salt which I knew, from my experiments, to be the last ingredient required; and late one accursed night, I compounded the elements, watched them boil and smoke together in the glass, and when the ebullition had subsided, with a strong glow of courage, drank off the potion.

The most racking pangs succeeded: a grinding in the bones, deadly nausea, and a horror of the spirit that cannot be exceeded at the hour of birth or death. Then these agonies began swiftly to subside, and I came to myself as if out of a great sickness. There was something strange in my sensations, something indescribably new and, from its very novelty, incredibly sweet. I felt younger, lighter, happier in body; within I was conscious of a heady recklessness, a current of disordered sensual images running like a millrace in my fancy, a solution of the bonds of obligation, an unknown but not an innocent freedom of the soul. I knew myself, at the first breath of this new life, to be more wicked, tenfold more wicked, sold a slave to my original evil; and the thought, in that moment, braced and delighted me like wine. I stretched out my hands, exulting in the freshness of these sensations; and in the act, I was suddenly aware that I had lost in stature.

There was no mirror, at that date, in my room; that which stands beside me as I write, was brought there later on and for the very purpose of these transformations. The night however, was far gone into the morning—the morning, black as it was, was nearly ripe for the conception of the day—the inmates of my house were locked in the most rigorous hours of slumber; and I determined, flushed as I was with hope and triumph, to venture in my new shape as far as to my bedroom. I crossed the yard, wherein the constellations looked down upon me, I could have thought, with wonder, the first creature of that sort that their unsleeping vigilance had yet disclosed to them; I stole through the corridors, a stranger in my own house; and coming to my room, I saw for the first time the appearance of Edward Hyde.

Chapter 10