▁channels ▁his ▁partner ' s ▁spirit ▁and ▁finds ▁that ▁he ▁has ▁fallen ▁down ▁a ▁well ▁and ▁subsequently ▁been ▁abandoned ▁by ▁the ▁possess ing ▁entity . ▁They ▁locate ▁the ▁well ▁and ▁rescue ▁him , ▁after ▁which ▁he ▁rec ount s ▁the ▁story ▁of ▁his ▁possession . ▁ ▁Notes ▁ ▁External ▁links ▁▁▁▁ ▁Category : 1 8 9 8 ▁short ▁stories ▁Category : A str al ▁projection ▁in ▁popular ▁culture ▁Category : Short ▁stories ▁by ▁H . ▁G . ▁Well s ▁Category : F ant asy ▁short ▁stories ▁Category : Work s ▁originally ▁published ▁in ▁The ▁Str and ▁Magazine <0x0A> </s> ▁Ernst ▁Ferdinand ▁P esch l ▁ ▁( 1 ▁September ▁ 1 9 0 6 ▁– ▁ 9 ▁June ▁ 1 9 8 6 ) ▁was ▁a ▁German ▁math ematic ian . ▁ ▁Early ▁life ▁▁ ▁Ernst ▁P esch l ▁came ▁from ▁a ▁family ▁of ▁bre wer y ▁own ers . ▁He ▁was ▁born ▁to ▁Edu ard ▁Ferdinand ▁P esch l ▁and ▁his ▁wife , ▁Ul la ▁( née ▁Ad ler ) ▁in ▁ 1 9 0 6 . ▁ ▁Education ▁and ▁academic ▁appoint ments ▁▁ ▁After ▁finishing ▁secondary ▁school ▁in ▁ 1 9 2 5 ▁in ▁Pass au , ▁P esch l ▁started ▁studying ▁mathematics , ▁physics , ▁and ▁astronom y ▁in ▁Mun ich . ▁ ▁He ▁received ▁his ▁doctor ate ▁in ▁ 1 9 3 1 ▁from ▁the ▁University ▁of ▁Mun ich ▁under ▁the ▁super vision ▁of ▁Constantin ▁Car ath é od ory ▁with ▁a ▁dis sert ation ▁titled ▁Über ▁die ▁Kr ü