142 



THE INVISIBLE WORLD 



tact, or by breathing, the microbe finds its way to 

 the bronchial organs. Here, with its true nourish- 

 ment, it grows and multiplies until it becomes mil- 



FIG. 12- 



lions upon millions. By their life processes these 

 beings generate a certain poison. This poison pro- 

 duces the inflammation and all the attendant mis- 

 chief. Mucus is generated in the bronchi and 



