Highlights in the History of Microbiology 



17 



Fixed 

 Draw 

 Tube 



Substage 



Adjustment 



Knob 



Fig. 3. Parts of the compound microscope. {Courtesy of the Amer- 

 ican Optical Company, Instrument Division, Buffalo, New York.) 



but when he died in 1723 at the age of ninety-one, this field of 

 science went into a dormant stage for almost 150 years. Com- 

 petition stirs activity. Leeuwenhoek was not in competition with 

 anyone except himself. Had he cooperated with others, micro- 

 biology might have used his work as a springboard, instead of 

 waiting until Louis Pasteur (1822-1895), Robert Koch (1843- 

 1910), and others gave it the necessary impetus during the Golden 



