▁ 1 8 6 7 . ▁He ▁graduated ▁with ▁a ▁degree ▁in ▁medicine ▁( MD ▁C M ) ▁from ▁McG ill ▁University ▁in ▁Montreal , ▁in ▁ 1 8 9 5 . ▁He ▁served ▁at ▁a ▁McG ill ▁affili ated ▁hospital ▁in ▁Montreal ▁for ▁one ▁year , ▁then ▁spent ▁two ▁years ▁in ▁China ▁and ▁Japan , ▁studying ▁scientific , ▁social , ▁and ▁economic ▁conditions . ▁In ▁ 1 8 9 7 , ▁he ▁received ▁the ▁British ▁Medical ▁Association ▁Student ship ▁for ▁research ▁on ▁the ▁nerv ous ▁system . ▁In ▁ 1 9 0 0 – 1 9 0 3 , ▁he ▁served ▁upon ▁a ▁special ▁mission ▁in ▁India , ▁studying ▁tropical ▁dise ases . ▁In ▁ 1 9 0 0 ▁he ▁was ▁appointed ▁as ▁the ▁first ▁director ▁of ▁the ▁Path ological ▁Institute ▁located ▁in ▁K ual a ▁L ump ur ▁in ▁the ▁Feder ated ▁Mal ay ▁States ▁( now ▁the ▁Institute ▁for ▁Medical ▁Research ). ▁He ▁returned ▁to ▁the ▁United ▁States ▁in ▁ 1 9 0 3 . ▁ ▁Career ▁He ▁made ▁his ▁name ▁by ▁supposed ly ▁finding ▁a ▁path ogen ▁that ▁" ca used " ▁ber i - ber i ▁( before ▁it ▁was ▁discovered ▁to ▁be ▁a ▁vit amin ▁def ic iency ). ▁He ▁author ed ▁many ▁articles ▁and ▁mon ograph s ▁on ▁the ▁nerv ous ▁system , ▁as ▁well ▁as ▁on ▁the ▁social ▁and ▁economic ▁problems ▁in ▁the ▁trop ics . ▁▁ ▁He ▁was ▁appointed ▁by ▁U . S . ▁President ▁The odore ▁Ro ose vel t ▁as ▁United ▁States