Society needs to have life lengthened instead of abbreviated at its extreme end but men and women to-day are growing old before their time. We often have deaths reported to be from old age between 45 and 55. Indeed, atrophy and debility often come prematurely. The long-sightedness of old age seems to begin earlier than it used to do and the increased number of those who wear glasses cannot be entirely explained by better diagnosis. It is quite clear that those who live in hot climates show these optical symptoms of old age earlier than Europeans. The teeth, too, are certainly degenerating earlier than formerly, and early baldness is probably increasing still more. Senile insanity or atrophy of the brain is certainly more common and appears earlier. It abounds in our metropolitan asylums where human wreckage accumulates. Very many enter the outer circles of melancholia without proceeding to dementia and still fewer proceed to suicide, the rate of which is also rapidly increasing after 45. Touches of this kind of depression are very often felt at the turning point of life or soon after, perhaps at the first discovery of gray hairs, and many are tormented in private and perhaps in the silent watches of the night by the realization that youth is leaving them. Such, however, is the law of nature, for even the stars and planets grow old, as we know by their spectra. The voice is not normally shrill or quavering but may be very strong unless the crop of wild oats, which always ripens in later years, is too rank. Conscience may awaken near the turn, especially if too many dregs have accumulated in the cup of life or the machinery has been overstrained. The fact is, the infirmities often attached to age may, each of them, in single cases be absent, so that typical old age is rare, and any one of them is far less prevalent than is generally supposed. Our life is made up of a series of evolutions of a group of different functions that develop serially, beginning at different age epochs, reaching their maximum vigor, and then declining. The hyaline cartilage dies of old age when bone is formed of it, as the milk teeth do. The thymus gland has completed its growth at the third year and slowly atrophies with every sign of age. The nervous system has the most sustained evolution. The infant, child, youth, are learning higher coördinations, and the psycho-motor system is not completely evolved till the end of the teens. The hand and arm centers continue their development and do not attain their perfection before thirty. The writer studied workmen in various factories and found that in many cases proficiency in manipulation grew for a decade and then became stationary at thirty, beyond which it could never be increased, and later declined. This decline took place sooner in highly specialized than it did in more general movements. In some artists, however, manual skill may increase to a great age.