This article describes an experiment in early Welsh-English bilingual education which was begun in September of 1968 with 35 children and which continued for two years. There was one male teacher who used mostly Welsh and taught for one hour per day. The average age of the children at the beginning of the two-year experiment was five years, two months. Initial strategies included the use of simple patterns and light vocabulary load, plus the use of puppets, illustrations, and music; the use of these and other teaching aids is described. Satisfactory progress was made in oral and then written proficiency, to the extent that science is now being taught in Welsh, and it is believed that other subjects could be taught in Welsh as well. Suggestions for further experimental work includes ascertaining the effects of different age groups, different time ratios, "outside" teachers, and daily routine school life. (AM)