Captain Bryce's confession of drugging

During the heated exchange, Captain Bryce, in a moment of anger, blurts out that the drug given to Rowland was not hasheesh but an infusion of Indian hemp. Rowland immediately points out that hasheesh is made from Indian hemp, thus convicting the captain of drugging him. Mr. Meyer seizes on this confession, declaring that he now has a witness. Captain Barry, who heard the confession, confirms it. This revelation destroys the captain's credibility and provides the legal basis for voiding the insurance policy.