ctors ▁were ▁again ▁called ▁into ▁consult ation , ▁and ▁it ▁was ▁ultimately ▁admitted ▁that ▁the ▁disease ▁really ▁was ▁cancer ; ▁but ▁Mack en zie , ▁with ▁very ▁question able ▁judgment , ▁more ▁than ▁hint ed ▁that ▁it ▁had ▁become ▁m align ant ▁since ▁his ▁first ▁exam ination , ▁in ▁consequence ▁of ▁the ▁ir rit ating ▁effect ▁of ▁the ▁treatment ▁by ▁the ▁German ▁do ctors . ▁The ▁crown ▁prince ▁became ▁em peror ▁on ▁ 9 ▁March ▁ 1 8 8 8 ▁and ▁died ▁on ▁ 1 5 ▁June . ▁During ▁all ▁this ▁period , ▁a ▁violent ▁quar rel ▁ra ged ▁between ▁Mack en zie ▁and ▁the ▁German ▁medical ▁world . ▁The ▁German ▁do ctors ▁published ▁an ▁account ▁of ▁the ▁ill ness , ▁to ▁which ▁Mack en zie ▁replied ▁by ▁a ▁work ▁entitled ▁The ▁F atal ▁Ill ness ▁of ▁Frederick ▁the ▁No ble ▁( 1 8 8 8 ), ▁the ▁publication ▁of ▁which ▁caused ▁him ▁to ▁be ▁cens ured ▁by ▁the ▁Royal ▁College ▁of ▁Sur ge ons . ▁ ▁After ▁this ▁sens ational ▁episode ▁in ▁his ▁career , ▁the ▁remainder ▁of ▁Sir ▁Mor ell ▁Mack en zie ' s ▁life ▁was ▁une vent ful , ▁and ▁he ▁died ▁somewhat ▁suddenly ▁in ▁London , ▁on ▁ 3 ▁February ▁ 1 8 9 2 ▁and ▁was ▁buried ▁in ▁the ▁church yard ▁at ▁W arg ra ve ▁in ▁Ber k shire ▁where ▁he ▁had ▁a ▁house ▁in ▁the ▁country . ▁He ▁published ▁several ▁books ▁on ▁l ary ng os copy ▁and ▁dise ases ▁of ▁the ▁thro at .