HOUSEHOLD BACTERIOLOGY 



2-300 4- 



MOST persons now know that mankind is greatly 

 troubled by the work of certain minute agents 

 variously termed germs, bacteria, micro-organ- 

 isms. Few, however, realize the good that these 

 forms do, or understand them and their place in the 

 world. It is the purpose of the following pages to 

 show the relations, both good and evil, that bacteria 

 and other micro-organisms bear to the household. 



DUST 



Most housewives look upon dust as an undesirable prevalence 

 thing that they are constantly seeking to be rid of. If 

 dust is seen on the piano or on the table each thinks 

 she will be considered a slack housekeeper. Perhaps 

 some are not troubled by the presence of .dust that does 

 not show. Such fight the enemy vigorously where vis- 

 ible, but relax effort where or when he is invisible. 

 The temptation comes to hide the tell-tale dust by 

 shutting out light. 



Few persons there are who have not at some time 



