▁way ▁to ▁apply ▁to ▁and ▁through ▁human ▁nature ▁what ▁he ▁was ▁doing ▁with ▁Mother ▁Nature . ▁ ▁In ▁the ▁light ▁of ▁difficulties ▁tre ating ▁more ▁complex ▁cases , ▁H ahn emann ▁under to ok ▁further ▁research ▁and ▁developed ▁a ▁theory ▁of ▁chron ic ▁m ias ms , ▁which ▁are ▁fixed ▁nature ▁dise ases ▁of ▁the ▁path ogen ic ▁type ▁( origin ally ▁inf ect ious , ▁but ▁also ▁inherited ) ▁which ▁give ▁rise ▁to ▁all ▁the ▁( second ary ) ▁chron ic ▁dise ases , ▁which ▁are ▁path ic ▁in ▁nature ▁( cf . ▁Rö sch la ub ' s ▁Path ogen esis ). ▁ ▁H ahn emann ▁also ▁gave ▁indic ations ▁as ▁to ▁when ▁the ▁pract ition er ▁could ▁tell ▁that ▁the ▁disease ▁had ▁been ▁c ured ▁by ▁the ▁similar ▁medicine ▁and ▁he aling ▁was ▁under way ▁( the ▁complete ▁process ▁term ed ▁" he ilen " ▁or ▁rem ed iation ). ▁Const antine ▁Her ing , ▁often ▁called ▁the ▁Father ▁of ▁Home op ath y ▁in ▁the ▁US , ▁further ▁developed ▁these ▁gu idel ines , ▁which ▁are ▁often ▁referred ▁to ▁as ▁" H ering ' s ▁Law ▁or ▁Princi ples " ▁: ▁from ▁less ▁vital ▁to ▁more ▁vital ▁org ans ▁in ▁the ▁case ▁of ▁pain , ▁from ▁above ▁down ▁in ▁the ▁same ▁direction ▁as ▁the ▁natural ▁disease ▁process . ▁ ▁This ▁was ▁later ▁expanded ▁in ▁the ▁latter ▁half ▁of ▁the ▁ 1 9 th ▁century ▁by ▁Dr . ▁James ▁Ty ler ▁Kent ▁who ▁noticed ▁that ▁when ▁disease ▁was ▁suppress ed