It is not, however, in the power of the wisest and most unselfish of individuals to so manage the work-power as to insure against premature old age from too great speeding and overstrain. There must be social movement of the most thorough-going sort to prevent the waste of the laborers in all fields. Social workers should remember that it is not alone important to try to safeguard the health and strength of mothers and of potential mothers by laws protecting women and girls in industry. It is as vital a need to safeguard the health and strength and perpetuate the work-power of fathers and potential fathers in order that old age may be not a terror but a blessing to the family. This is emphasized by recent indications that the increase of the diseases of middle age is already checked and that we are gaining ground in this particular. A recent report of the Federal Department of Commerce through the Bureau of Census shows that there has been a decline in the death-rate for all age periods during the last decade. In the rate for infants under one year of age a decline of twenty-six per cent., or from 13,804 per 100,000 in 1910 to 9,660 per 100,000 in 1920. The death-rate for middle-aged and old people shows an encouraging decrease, that of twelve per cent., in the period above seventy-five years of age. This shows that we are gaining on disease and premature death with every new advance in preventive medicine and the crusade against bad living conditions. This, again, means that in the future we shall have more aged persons in ratio of population than we have had in the past, and indicates the great need of taking measures betimes to make old age not only more mentally strong but more happy and comfortable in condition.