A shekara ta 1938, bayan mutuwar Carothers, Flory ya koma Cibiyar Nazarin Kimiyya na Gida a Jami'ar Cincinnati. A can ya ci gaba da ka'idar ilmin lissafi don polymerization na mahadi tare da fiye da ƙungiyoyi biyu masu aiki da ka'idar cibiyoyin polymer ko gels. Wannan ya haifar da ka'idar Flory-Stockmayer na gelation, wanda yake daidai da percolation a kan Bethe lattice kuma a gaskiya yana wakiltar takarda na farko a cikin filin percolation. Tambaya: Yaushe Carothers ya mutu?
Shekara ta 1938