This call of the new missionaries was returned by the priest, and on several occasions afterwards he visited the Doctor in his house. Occasionally he would send notes by his servants requesting various favours, medical attendance upon inmates of the watt, loan of books. On a second visit, when Dr. House went to engage the services of a young priest as instructor in Siamese, the prince proposed that the Doctor should come over to the watt and make use of the room which Mr. Caswell occupied for his class in English, and “there distribute medicines and teach the young men of the watt how to be doctors.” Among the papers of Dr. House was found an autograph letter in English written by Chao Fah Yai about this time inviting him and the other missionaries to attend a cremation ceremony at watt Thong Bangkoknoi; and offering him the privilege of distributing religious books among the head priests assembled there from several watts and to preach to them on the new religion. On other visits he inquired about the new instrument that “would send intelligence quickly” (the telegraph), asked why American vessels so seldom came to Bangkok, and discussed the difference between the Latin and English Bibles. In proper sequence of courtesy the new missionaries were taken to call upon the other prince, Chao Fah Noi. For some reason this prince had withdrawn from his former intercourse with foreigners, but he very courteously received the callers and was manifestly pleased with the attention. He, too, was interested in Western learning and especially inclined towards the physical sciences. On the palace grounds he had several shops, one for a forge, one for iron lathes, one for wood-working. Power for all this machinery was developed by slave-muscle. In one room was a working model of a steam engine, two and a half feet long, made entirely by the prince’s own hands. Being somewhat unwell he consulted Dr. House, but explained that he was under the King’s physician and to refuse to take his medicine would be an act of disrespect to His Majesty, and for that reason would not ask Dr. House to prescribe for him. The acquaintance thus formed was used, at first, by the prince more as a means of securing personal instruction on physical sciences. Frequently servants were sent to Dr. House to borrow books or to ask for advice on chemistry, electricity, photography, lithography and kindred subjects; and on various occasions the doctor was summoned to the prince’s palace only to find that his assistance or instruction was desired in some experiment. In after years, however, when Chao Fah Noi had become Vice-King upon the accession of Mongkut, his intercourse with Dr. House rested more upon the basis of friendship. SCIENCE AND RELIGION