PLATE I. 

 CULTURES OF ORGANISMS. 



Fig. 1. — Staphylococcus pyogenes aureus — Stab culture in 



gelatine. 

 Fig. 2. — Staphylococcus pyogenes aureus — Streak culture 



on agar. 

 Fig. 3. — Diplococcus pneumoniae crouposse — Stab culture 



in agar. 

 Fig. 4. — Diplococcus pneumoniae crouposae — Streak culture 



on agar. 

 Fig. 5. — Streptococcus pyogenes — Streak culture on agar. 

 Fig. 6. — Streptococcus pyogenes — Stab culture in gelatine. 

 Fig. 7. — Micrococcus tetragenus — Streak culture on agar. 

 Fig. 8. — Sarcina lutoa— Stab culture in gelatine. 

 Fig. 9. — Sarcina lutea — Streak culture on agar. 



