ECONOMIC IMPORTANCE OF FUXGI 



307 



numerous important ways in which these tiny plants affect 

 our daily lives. In fact their discovery has practically 

 revolutionized our method of li^•ing' 'in many ways. 



Fig. 225. — ^Louis Pasteur, founder of the science of bacteriology. 



Modern methods of sanitation and hygiene, public and 



private, modern house furnishitig, as, for example, the 



substitution of bare floors with rugs in place of carpets, 



' modern views of disease and methods of treating it, and 



