esses ▁all ▁the ▁complex ities ▁of ▁education ▁in ▁the ▁prison ▁system ." ▁ ▁References ▁ ▁External ▁links ▁▁ ▁Official ▁P BS ▁page ▁ ▁Category : English - language ▁television ▁programs ▁Category : 2 0 1 0 s ▁American ▁document ary ▁television ▁series <0x0A> </s> ▁Carl ▁Julius ▁Fritz sche ▁( 1 7 ▁October ▁ 1 8 0 8 ▁in ▁Ne ust adt ▁– ▁ 8 ▁June ▁ 1 8 7 1 ) ▁was ▁a ▁German ▁ph arm ac ist ▁and ▁chem ist . ▁He ▁was ▁a ▁nep hew ▁of ▁ph arm ac ist ▁Friedrich ▁Ad olph ▁August ▁Str uve ▁( 1 7 8 1 – 1 8 4 0 ). ▁ ▁After ▁five ▁years ▁spent ▁working ▁at ▁his ▁uncle ' s ▁ph arm acy ▁in ▁Dresden , ▁he ▁moved ▁to ▁Berlin , ▁where ▁he ▁worked ▁for ▁two ▁and ▁a ▁half ▁years ▁in ▁the ▁labor atory ▁of ▁chem ist ▁Johann ▁Gott fried ▁August ▁Hel ming ▁( 1 7 7 0 – 1 8 3 0 ). ▁In ▁ 1 8 3 0 ▁he ▁became ▁an ▁assistant ▁to ▁E il hard ▁Mit scher lich ▁at ▁Berlin , ▁subsequently ▁receiving ▁his ▁doctor ate ▁with ▁a ▁th esis ▁on ▁pol len , ▁Dis sert atio ▁de ▁plant ar um ▁pol line ▁( 1 8 3 3 ). ▁In ▁ 1 8 4 4 ▁he ▁became ▁an ▁associate ▁professor ▁in ▁St . ▁Petersburg , ▁where ▁in ▁ 1 8 5 2 ▁he ▁att ained ▁a ▁full ▁professor ship . ▁ ▁In ▁his ▁studies ▁of ▁anth rac ene , ▁he