I te tau 1938, i muri i te matenga o Carothers, ka neke a Flory ki te Rangahau Rangahau Pūtaiao Matua i te Whare Wananga o Cincinnati. I reira i whakawhanakehia e ia he ariā pāngarau mo te polymerization o nga pūhui me te neke atu i te rua nga roopu mahi me te ariā o nga whatunga polymer, gel ranei. Na tenei i arahi ki te ariā Flory-Stockmayer o te gelation, he rite ki te percolation i runga i te Bethe lattice, a, ko te mea tuatahi i roto i te mara percolation. Pātai: I te wa i mate ai a Carothers?
Ko te tau 1938