Suppose the vital organs, the irreplaceable mechanisms of life, were replaceable? If a heart wore out, install a new one. If a liver or kidneys deteriorated, discard them for fresh and vigorous substitutes. Diseased or injured parts of the body, including some of its vital organs, can now be replaced. The replacements can be of metal and plastic or natural organs and tissues from animals and human beings. This bold approach to the preservation of life is a brilliant blend of science, mechanics, and art called transplantation. Its eventual applications seem unlimited, it present problems enormous, its current progress encouraging. - p. 1-2.