PIP: The Subanen people are known as the aborigines of the Island of Mindanao, and are found mostly in the northern, western and southern portions of the Zamboanga peninsula. They were originally found along the river banks or "suba" but now reside in the mountains. Education among these people was limited to instruction by the Thimuay head to a future husband and wife regarding love, respect and treatment of each other, parents, and in-laws. The tribe has no religion although it is believed that they had a holy book at one time. In marriage, the parents of the man look for a woman he will marry and both sets of parents set the wedding date. Polygamy and polyandry are practiced but separation is not allowed nor is marrying nearest relatives. When a couple wants to have only 1 or 2 children the wife, after giving birth, eats an herb called benayan. For birth spacing she eats 2 herbs, and if no more children are desired she eats more. Another type of birth control is practiced by the midwife who "manipulates" the woman after delivery. Various methods are practiced to predetermine a child's sex. Pregnant women must abide by many regulations including placing a piece of wood across her path before going in a doorway. It is considered a blessing to have more daughters than sons because the father will be able to recover the dowry he paid for his wife. There is a general belief that all human beings should marry.