io8 HOUSEHOLD BACTERIOLOGY 



sanitary Sanitary cleanness requires the cleanness of the in- 

 cieanness dividual, of his possessions, and of his environment. 

 Each individual is directly responsible for his per- 

 sonal cleanness and that of his possessions ; but over a 

 large part of his environment he has only indirect 

 control. Not until this personal responsibility is felt 

 in its fullest sense, and exercised in all directions to- 

 ward the formation and carrying out of sufficient and 

 efficient public laws, will sanitary cleanness supplant 

 the cure of a large number of diseases by their pre- 

 vention. 



When the right of cleanness is added to the right to 

 be well fed, and both are assured to each individual 

 by the knowledge and consent of the whole people, 

 then the great gospel of prevention may make good 

 its claim. Towards this ideal tend all the problems 

 which the science of bacteriology is endeavoring to 

 solve. These problems cannot be solved in the labora- 

 tory alone. Each house in the land, presided over by 

 an active, intelligent supervisor, should become an ex- 

 periment station for the individual application of 

 scientific laws. 



