Students of human welfare have lately become more and more aware of seemingly conflicting trends in the progress of mankind. Movements that lead to betterment in one direction may presently encounter obstacles that are interposed from another source. The current literature dealing with the problems of human society has begun to reflect the incongruities and incompatibilities that are likely to arise in the development of modern programs. The benefits that are accruing through the application of the principles of preventive medicine are bringing about situations that may sooner or later result in unintended distress. Ravenel, 1 in a recent summary of certain features of the outlook, writes that never before has there been such an intensive campaign to prolong life. Our success in the control of communicable diseases has been notable along every line except for the respiratory infections. Education in personal hygiene is making good advances. New discoveries in
PROBLEMS OF POPULATION. JAMA. 1926;87(25):2095–2096. doi:10.1001/jama.1926.02680250053020
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