Can human life be much prolonged? If possible, is such a result desirable? A mere continuation of life, without vigour or productive power, does not present an attractive outlook. Simply to drag out a vegetative existence usually means unhappiness to the individual and too often a burden on society; yet one cannot help feeling that many human lives are too short. Just as the individual learns how to live and begins to accumulate a valuable experience that may be of service to the world, death cuts short the career.