Chapter 6-7

Utterson reads Lanyon's narrative. The letter begins with a description of a strange letter Lanyon received from Henry Jekyll, the night after a dinner party at Jekyll's residence. The letter urges Lanyon to go to Jekyll's house and fetch a certain drawer with specific contents from the laboratory. Afterwards, a messenger will come to Lanyon's house in Jekyll's stead to recover these items, which include powder, a phial, and a paper book. Lanyon follows the instructions thinking that Jekyll has lost his mind. Mr. Hyde appears at the specified time, looking particularly strange, dressed in clothes far too large for him. Lanyon gives Hyde the ingredients. Hyde then asks Lanyon whether or not he would like to see the end result of his errand. Lanyon is curious and agrees. Hyde mixes the ingredients into a potion, drinks it, and transforms into Dr. Jekyll as an astounded Lanyon observes. Lanyon is deeply affected by this shock and the pure evilness of Jekyll, brings on his subsequent illness and death.
After reading Dr. Lanyon's account, Utterson reads Jekyll's own description of his failed experiment. Jekyll believed that the soul is made up of two separate distinctions: good and evil. These two separate beings live in continuous and inherent conflict with each other. Slowly, Jekyll begins an experiment where he attempts to completely differentiate these two aspects of human nature. Jekyll experiments extensively and then makes two potions. One transforms him into Edward Hyde, and the second transforms him back into Henry Jekyll. This amazingly successful experiment begins Jekyll's extensive exploration of his other self, a man entirely comfortably in morally corrupt behavior, whom he eventually names Edward Hyde.