FOOD AND OXYGEN IN CONTROLLING SEX 



109 



TABLE 3 



Mass culture experiments with Euchlanis dilatata showing that when considerable 

 quantities of the green flagellate, Chlamydomonas, were added to the jars of water 

 that many males appeared but when only small quantities of Chlamydomonas 

 or none at all were added very few if any males appeared 



