ired ▁two ▁years ▁before ▁to ▁head ▁up ▁the ▁bot any ▁department . ▁In ▁ 1 9 1 7 , ▁Freder ic ▁gave ▁up ▁teaching ▁and ▁began ▁doing ▁research ▁fund ed ▁by ▁the ▁Car neg ie ▁Institution ▁of ▁Washington , ▁D . C . ▁For ▁many ▁years ▁there after , ▁Car neg ie ▁Institution ▁fund ing ▁supported ▁their ▁joint ▁research ▁endeav ors , ▁and ▁Clement s ▁was ▁named ▁a ▁field ▁assistant ▁by ▁the ▁Car neg ie ▁Institution . ▁ ▁Begin ning ▁in ▁ 1 9 1 7 , ▁the ▁Clement s es ▁spent ▁the ▁winter s ▁doing ▁research ▁at ▁two ▁Car neg ie - fund ed ▁research ▁institutions : ▁first ▁at ▁the ▁T uc son ▁Institute ▁in ▁Arizona , ▁and ▁then ▁( start ing ▁in ▁ 1 9 2 5 ) ▁at ▁the ▁Coast al ▁Labor atory ▁in ▁Santa ▁Barbara , ▁California . ▁Through out ▁this ▁period , ▁their ▁sum mers ▁were ▁spent ▁at ▁a ▁botan ical ▁station ▁they ▁developed ▁as ▁a ▁test ▁site ▁for ▁plant ▁acc limat ization , ▁Al pine ▁Labor atory ▁at ▁P ikes ▁Pe ak , ▁Colorado . ▁Clement s ▁served ▁as ▁instruct or ▁in ▁bot any ▁for ▁the ▁Al pine ▁Labor atory , ▁and ▁Freder ic ▁as ▁director . ▁They ▁trained ▁many ▁botan ists ▁and ▁e colog ists ▁at ▁this ▁lab ▁during ▁its ▁four ▁dec ades ▁of ▁activity , ▁before ▁it ▁closed ▁in ▁ 1 9 4 0 . ▁They ▁published ▁joint ly ▁and ▁individually , ▁and ▁Clement s ▁used ▁her ▁language ▁skills ▁to ▁translate ▁some ▁of ▁their ▁books