AMEN HOTEP, I.–IV.: see EGYPT, The New Empire. AMENORRHOEA is the absence of menstruation between the age of puberty and the menopause. In those who have never menstruated the cause of amenorrhoea is usually poor general health or anaemia. Occasionally it is found to be an abnormality in the development of the genital tract, and it has also been as cribed to glandular unbalance. Often no cause can be found. After the onset of menstruation by far the most common cause of missing a period is pregnancy. During acute diseases the period may be delayed or missed, and in the course of chronic debilitating diseases menstruation is often suppressed. Operative removal of uterus and ovaries, and certain diseases of the ovaries, also cause amenorrhoea. Strong emotions, especially the dread of pregnancy, may likewise account for it. Amenorrhoea in itself is not serious, but the condition causing it may require investigation and treat ment.