how does Utterson react to the new information?

That evening after his walk with Enfield, Utterson returns home and examines Dr. Jekyll's will, which he remembers had strange stipulations referring to the Mr. Hyde Enfield discussed. The will provides that in the case of Henry Jekyll's death or disappearance, all of his possessions should be given to the Edward Hyde. Utterson was uncomfortable when Jekyll originally requested this stipulation, and is further upset by it after hearing of Mr. Hyde's despicable behavior. After considering the implications of the will with what he has learned about Edward Hyde, Utterson goes to visit Dr. Lanyon, another dear friend of Dr. Jekyll's. When the men begin talking about Jekyll, Utterson discovers that Lanyon has not spoken to Jekyll for a long period of time due to a disagreement over "unscientific balderdash." Utterson also learns that Lanyon has never heard of Hyde.