IO 



THE POPULAR SCIENCE MONTHLY 



of these conditions, that person is 

 automatically excluded. In Class 

 B are conditions which are not 

 mentioned in Class A, but which 

 make the person affected liable to 

 become a public charge or affect 

 his ability to earn a living. Class 

 C includes defective and diseased 

 conditions not included under A 

 or B but which must nevertheless 

 be certified for the information of 

 the immigration officials. 



The medical inspection of all 

 immigrant aliens is performed by 

 officers of the United States Pub- 

 lic Health Service. This service 

 dates from an act of congress in 



A Chinese Girl in the 

 Dentition Quarters. 



A Russian Jewish Boy, just landed. 



1798 creating the original Marine 

 Hospital Service, which conducted 

 hospitals at all large ports and in- 

 land waterway cities for seamen of 

 the American merchant marine. 

 The duties of the service have since 

 been enlarged to include all fea- 

 tures of national health protection. 

 Its officers rank equal with those of 

 the army and navy medical corps, 

 and are found in all parts of the 

 world pursuing their investigations 

 and carrying out measures to pro- 

 tect the public health of the United 

 States. The medical inspection of 

 immigrants is not the least impor- 

 tant of their functions. The Bu- 

 reau of Immigration is under the 



