Their idea of the universe was based upon a total ignorance of many common facts of nature, an ignorance which completely excluded from their minds the idea of a spiritual God. They were so obsessed with fallacies about natural phenomena that there was but small common basis of physical knowledge upon which the missionaries could build an argument to dispose of these grotesque ideas. For instance, the popular explanation of a lunar eclipse was that a great dragon was trying to swallow the moon. When an eclipse occurred, the people would set up a din of kettles and drums to scare away the dragon. Since the moon always escaped, the people were the more confirmed in their belief. Then there was the old notion of the earth being flat. In the midst of the earth was a great central mountain, whence Buddha had come, surrounded by a vast plain; and inasmuch as Siam occupied the middle of this plain, obviously there could be no other greater country. Before truth could penetrate such an armour of ignorance, it was necessary that nature be stripped of these false ascriptions in order that there might be a common ground upon which to consider the arguments for the Christian faith. In the presentation of Dr. House’s message there can be traced an orderly philosophy which reflects this situation. First he sought to remove some of these false ideas by pointing out common facts of nature which the natives had never observed. Next he sought to explain the conception of God as Creator. From this he led on to the love and mercy of God as revealed by Jesus. As a practical sequence he aimed to give an elementary education to the few who would receive it so as to demonstrate the Christian way of life. This meant in the course of time the development of a system of education. SCIENTIFIC INTERESTS Dr. House was peculiarly fitted for this work, for he had been providentially prepared to draw upon a wide range of scientific instruction. His years at Rensselaer Institute had developed his taste for natural philosophy and had given him a lifelong interest in the progress of science. His study of medicine had qualified him in practical chemistry, while his few years of teaching gave him needed experience in laboratory demonstrations. While trying some experiments with gas in Siam he recalls “occasions of the same kind at Rensselaer school and in the Virginia school.” Busy as he was, he managed to keep abreast of scientific progress through the journals of science, and was forward to adopt new ideas as he found them. In March, 1847, he writes: “In evening read account of inhaling ether as a means of enabling one to perform surgical operations without pain to the patient. A wonderful discovery truly—inestimable in its benefit to the suffering of our race—and the author of it was an American.” At the first opportunity he applied the new idea to a patient in surgery: