The first to respond was Prince Ammaruk, the favourite son of the king, who requested the privilege of watching the doctor create the wonderful “winds.” On the day appointed for the special experiment, Chao Fah Yai sent a request for Dr. House to accompany him that evening to call upon a brother prince who was quite ill. In reply the doctor explained his engagement for the evening, but offered to make the call after the demonstration, and suggested that the Priest-Prince might himself like to witness the experiment. To the doctor’s surprise, the Priest-Prince came early in the afternoon to take the doctor to see the patient, so that they might have the whole evening free for the experiments. At the palace, Chao Fah Yai explained the evening’s entertainment to the royal physician (a brother of the king) who promptly invited himself. By arrangement with Prince Ammaruk several others were to come, so that at the appointed time the small house was filled with nobles and princes, and the verandah with their servants. Fortunately the experiments went off successfully; oxygen was generated and iron was burned in the oxygen; hydrogen was generated from water and exploded in combination with oxygen. Chao Fah Yai was particularly enthusiastic, and called in from the verandah some of his men to see the wonders, and himself volunteered to explain the facts to them. The series of lectures awakened widespread interest among the progressive nobles. Dr. House became a notable in their esteem. Nearly all of the group who were present on that evening were amateur scientists; they had the air pump, the electric machine and other physical apparatus, but of chemistry they had no idea. Shortly after this Chao Fah Noi, who had been keeping aloof from foreigners, sent a request for Dr. House to spend the evening at his palace and instruct him in the making of gases. How long the series of lectures continued is not apparent; the journal continues reference to them while they are novel, but they apparently continued throughout that winter. Other subjects named were “The Weight of the Atmosphere,” “The Barometer,” “Heat,” “The Oxyhydrogen Blow Pipe,” “Carbon and Carbonic Gas,” “Electro-magnetic Telegraph,” and “Electricity.” The original purpose of instruction for the servants was outgrown, and week after week one or more of the nobles who were dabbling in science were present with their ubiquitous train of servants. From this time on the journal indicates that the doctor’s instruction in the Bible classes took the form of “Evidences of Natural and Revealed Religion.”