turpitude; polygamists, anarchists, contract laborers, prostitutes, persons not comprehended within any one of the foregoing excluded classes who are found to be and are certified by the examining surgeon as being mentally or physically defective, such mental or physical defect being of such a nature as to affect the ability of the alien to earn a living.
Fig. 39.—Surgeons of the United States Public Health Service test every immigrant, physically and mentally, in order to send back any who give promise of being undesirable additions to the population. The above photograph shows how the examination of those whose condition has aroused suspicion, is conducted. The boy under the measuring bar, in the foreground, and the three immediately to the left of the desk, are examples of congenital asthenia and poor physique; two of the four were found to be dull mentally. Photograph from U. S. Public Health Service.
Despite the efficiency of the U. S. Public Health Service, it is quite impossible for its small