STIMULATING EFFECTS OF CROWDING 



163 



TABLE VIII 



Showing Robertson's Original Allelocatalytic Data 



(The Data in the Last Column Are Based on Those of the Preceding Column, 



Restated To Show Directly the Effect of the Presence of a Second 



Organism in the Same Limited Amount of Medium) 



Culture No. 



No. of Animals 

 Introduced 



No. after 24 

 Hours 



Ratio 



Ratio per Single 

 Original Animal 



Normal Hay Infusion; Parent Culture 24 Hours Old 



Normal Hay Infusion; Parent Culture 48 Hours Old 



