Infancy and youth are plastic. Both body and mind are susceptible to surrounding influences. If the heredity is unfavorable it can be largely modified by favorable environments. If a child is born of unhealthy parents, but without any serious defect, and is intelligently cared for after birth, it will grow up to be healthy. On the other hand, a child born of healthy parents that is improperly cared for will become ill and perhaps die young. In early years the habits are formed that will largely influence and control the years of maturity. Most children learn bad habits from birth. It is as easy to acquire good habits as bad ones, and as people are largely creatures of habits, every parent should aim to give his children a good start. Parents seldom do wrong intentionally, but they are careless and many of the parental habits of the race are bad, and for this the future generations must suffer. It is easier and more economical to have healthy babies than to have sickly ones. The healthy way is the simple way. It merely means self-control, common sense and constructive knowledge on the part of the parents. PRENATAL CARE. It is commonly believed that a pregnant woman must eat for two. The wise woman will not increase her food intake. If she is not up to par physically at the time of conception she will generally find it advantageous to decrease the food allowance. A healthy baby should not weigh to exceed six, or at most seven, pounds at birth. Five pounds would be better. It does not take much food to nourish an infant of that weight, and the baby does not weigh that much until shortly before birth. Most of the food is used for fuel but the amount of fuel required to heat a baby that is kept warm within the mother's body is almost negligible. One of the first and most important requisites for having healthy children is to avoid the eating-for-two fallacy. Most people overeat, anyway, and there should be no encouragement in this line. The results of overeating are many and serious. The mother grows too heavy or else she becomes dyspeptic. Overeating and partaking of food of poor quality are the chief causes of the ills of pregnancy. Prospective mothers can be comfortable. Pregnancy and childbirth are physiological. Normal women suffer very little inconvenience or pain. The suffering during pregnancy, the pain and accidents at childbirth are measures of the mother's abnormality. The greater the inconvenience the farther has the individual strayed from a natural life. The women who live normally from the time of conception, or before, until the birth of the baby will be surprised how little inconvenience there is.