SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOL. 92, NO. 6, PL. 3 



1. Flask in Which the Cuuture Medium for All the Cultures 

 Was Sterilized and Inoculated 



The sterilized pipette was adjusted to the large container immediately before the culture was 

 poured into the small Erlenmeyer flasks. 



2. Two Culture Flasks Ready to be Inserted in the Metal 



Containers, Each of which Has a Different 



Color filter on the Bottom 



