CLASSIFICATION 



57 



activities. One of these systems has been adopted by the 

 laboratory section of the American Public Health Associa- 

 tion and by the Society of American ^Bacteriologists and is 



Fig. 48. — Illustrates the genus 

 Streptococcus. Typical chains, no 

 staphylococcus grouping, no saroina 

 grouping, no flagella. 



Fig. 49. — Illustrates the genus 

 Micrococcus. Diplococcus, tetrads, 

 short chains and staphylococcus; 

 no sardina, no flagella. 



practically the standard in this country. It is that of the 

 German Bacteriologist Migula and is the only one which 

 will be considered here and used throughout this book. 



Fig. 50. — Illustrates the genus 

 Sarcina. Sarcina grouping, no 

 flagella. 



Fig. 51. — Illustrates the genus 

 Bacillus. A bacillus with peritri- 

 chic flagella. (Student prepara- 

 tion.) 



Personally, the author would prefer some slight modifications, 

 but as he is not a botanist, will not presume to make them. 

 Since practically the entire discussion in this book is con- 



