putrefaction and mortification – break down the inner cohesion of any fixed state. Putrefaction, by decomposition or falling apart; mortification, by grinding down, as seeds in a mortar are refined into ever
Hillman defines mortification as the alchemical operation that disaggregates compacted psychic material by grinding it down, distinguishing it precisely from putrefaction and locating both within the blackening phase of the opus.
, Alchemical Psychology, 2010thesis