▁issue , ▁and ▁a ▁total ▁of ▁ 1 2 0 ▁of ▁his ▁articles ▁were ▁published ▁by ▁the ▁journal , ▁up ▁until ▁ 1 9 5 6 . ▁ ▁The ▁death ▁of ▁Lo eb ▁in ▁ 1 9 2 4 ▁left ▁a ▁vac ancy ▁at ▁the ▁Rock ef eller ▁Institute , ▁and ▁O ster h out ▁joined ▁the ▁staff ▁in ▁ 1 9 2 6 . ▁There ▁he ▁performed ▁much ▁product ive ▁research . ▁During ▁the ▁ 1 9 3 0 s , ▁he ▁was ▁the ▁first ▁to ▁suggest ▁the ▁active ▁transport ▁mechanism ▁of ▁a ▁car rier ▁mole c ule ▁for ▁moving ▁sol utes ▁across ▁a ▁cell ▁memb rane . ▁In ▁ 1 9 3 3 ▁he ▁married ▁a ▁second ▁time , ▁to ▁his ▁colle ague , ▁fellow ▁plant ▁phys i ologist ▁Marian ▁Ir win , ▁the ▁third ▁daughter ▁of ▁Robert ▁Walker ▁Ir win ▁and ▁his ▁Japanese ▁wife , ▁I ki . ▁ ▁By ▁ 1 9 5 1 , ▁O ster h out ' s ▁health ▁began ▁to ▁fail . ▁He ▁died ▁at ▁St . ▁Bar nab as ▁Hospital ▁at ▁the ▁age ▁of ▁ 9 2 , ▁after ▁a ▁long ▁bout ▁of ▁ill ness . ▁ ▁Awards ▁and ▁hon ors ▁O ster h out ▁received ▁the ▁following ▁hon ors : ▁ ▁Honor ary ▁doctor ate ▁from ▁Harvard ▁University ▁in ▁ 1 9 2 5 ▁ ▁Honor ary ▁doctor ate ▁from ▁Brown ▁University ▁in ▁ 1 9 2 6 ▁ ▁Member ▁Emer it us , ▁Rock ef eller ▁Institute ▁in ▁ 1 9 3