“Harriette is as industriously engaged as ever. She will teach three full hours a day, besides what she does for her girls at home, reading and translating with the Siamese teacher. Nor can she be persuaded to spare herself. Has just started under superintendance of Delia and Ooey, alternately, an infant sewing and singing class.” Thus by assistance of the girls whom she had already taught she undertook to extend her reach, training these girls in teaching under her own direction. After she had fairly mastered the language she sought further to enlarge her influence by preparing tracts and translating pamphlets. She is credited with these productions: _Questions in Gospel History_, 1864; _Stand by the Truth_, 1869 (these two in conjunction with Dr. House); _Catechism in Bible Truth_, 1870; several juvenile story books. Concerning the _Catechism_, Dr. House wrote to Mrs. House while she was in America (1871): “I take great satisfaction in the circulation of that little tract _Bible Truth_ you toiled on so faithfully, and I like it better each day. Our whole school recite their ‘verse a day’ from that now.” PRECARIOUS HEALTH While admiring her industry. Dr. House expressed foreboding very early, writing six months after her arrival: “H. is really very well now, but is far too industrious. I am curious to know the effect a Siamese sun will have on such habits of diligence as she has brought from the United States.” That the tropical rays were not to be ignored, even by consecrated diligence, early became manifested by a strange “burning sensation in the top of the head,” from which Mrs. House began to suffer within a year and which continued, sometimes with alarming discomfort, throughout her residence in Siam. As the pain increased rather than abated after seven years in the tropics, her physician recommended a sojourn in her native climate in hopes of gaining permanent relief. Accordingly Dr. and Mrs. House left Bangkok in February, 1864, and spent two full years in America. The change brought relief which at the time it was hoped would be permanent. BEGINNINGS OF FEMALE EDUCATION IN SIAM It is not possible to ascribe to Mrs. House the beginnings of education of women in Siam. Even apart from the efforts of the women of the other missions to teach the Chinese women, Mrs. Mattoon had at the outset of her career taken native girls into her home with a view to educating them. Later she succeeded in gathering a class of little girls in the Peguan village across the river from the capital. When Mrs. House came, in 1856, Mrs. Mattoon was conducting a class of six or seven married women whom she taught to read while at the same time giving religious instruction. Shortly after the coming of Mrs. House, Mrs. Mattoon seems to have withdrawn from such work in her favour, as her own time was then largely occupied with her domestic duties.