This book, written by one of America's most distinguished authorities on tuberculosis, clearly reflects, in particular, his views concerning the relative effectiveness of various methods of tuberculosis control. It documents the remarkable decline of the contagion during the past few decades. Dr. Myers reviews the very favorable trends which have occurred in the state of Minnesota largely as a result of his inspiration, guidance and remarkable drive. For many years he has been emphasizing the importance of the tuberculin test as the single most useful guide in any tuberculosis control program.