The whole of this evolutionary process, we have to remember, is a natural process. It has been going on from the beginning of the living world. But at a certain stage in the higher development of man, without ceasing to be natural, it becomes conscious and deliberate. It is then that we have what may properly be termed _Birth Control_. That is to say, that a process which had before been working slowly through the ages, attaining every new forward step with waste and pain, is henceforth carried out voluntarily, in the light of the high human qualities of reason and foresight and self-restraint. The rise of birth control may be said to correspond with the rise of social and sanitary science in the first half of the nineteenth century, and to be indeed an essential part of that movement. It is firmly established in all the most progressive and enlightened countries of Europe, notably in France and in England; in Germany, where formerly the birth-rate was very high, birth control has developed with extraordinary rapidity during the present century. In Holland its principle and practice are freely taught by physicians and nurses to the mothers of the people, with the result that there is in Holland no longer any necessity for unwanted babies, and this small country possesses the proud privilege of the lowest death-rate in Europe. In the free and enlightened democratic communities on the other side of the globe, in Australia and New Zealand, the same principles and practice are generally accepted, with the same beneficent results. On the other hand, in the more backward and ignorant countries of Europe, birth control is still little known, and death and disease flourish. This is the case in those eight countries which come at the bottom of both our lists.