▁H . ▁( 1 8 8 0 ) ▁The ▁Bird s ▁of ▁Corn wall ▁and ▁the ▁Sc illy ▁Islands ; ▁edited ▁by ▁J . ▁E . ▁Hart ing . ▁London ▁ ▁Category : Environment ▁of ▁Corn wall ▁* ▁* ▁Category : Ge ography ▁of ▁Corn wall <0x0A> </s> ▁Null um ▁temp us ▁occur rit ▁reg i ▁(" no ▁time ▁runs ▁against ▁the ▁king "), ▁also ▁abbre vi ated ▁to ▁null um ▁temp us , ▁is ▁a ▁common ▁law ▁doctrine . ▁ ▁In ▁republic s , ▁it ▁is ▁often ▁referred ▁to ▁as ▁" null um ▁temp us ▁occur rit ▁re ip ublic ae ". ▁ ▁Mean ing ▁The ▁doctrine ▁states ▁that ▁the ▁crown ▁is ▁not ▁subject ▁to ▁stat utes ▁of ▁limitations . ▁This ▁means ▁that ▁the ▁crown ▁can ▁proceed ▁with ▁actions ▁that ▁would ▁be ▁bar red ▁if ▁brought ▁by ▁an ▁individual ▁due ▁to ▁the ▁passage ▁of ▁time . ▁ ▁The ▁doctrine ▁is ▁considered ▁by ▁some ▁to ▁be ▁an ▁application ▁of ▁so ver eign ▁imm unity ▁to ▁areas ▁of ▁law ▁concerning ▁stat utes ▁of ▁limitations . ▁While ▁the ▁two ▁do ctr ines ▁are ▁often ▁linked ▁as ▁concepts , ▁and ▁are ▁considered ▁by ▁some ▁juris dict ions ▁to ▁be ▁inter tw ined ▁in ▁policy ▁and ▁practice , ▁there ▁is ▁a ▁debate ▁on ▁whether ▁the ▁two ▁do ctr ines ▁are ▁actually ▁related . ▁ ▁Pur pose ▁Some ▁legal ▁exper ts ▁assert ▁that ▁Null um ▁temp us ▁is ▁designed ▁to ▁protect ▁public ▁interests , ▁on ▁the ▁belief ▁that ▁members ▁of ▁the ▁public ▁should ▁not ▁have ▁to ▁be ▁li