▁war , ▁added ▁to ▁the ▁house ' s ▁collection , ▁his ▁particular ▁interests ▁being ▁rare ▁books , ▁and ▁botan ical ▁spec im ens ▁( many ▁of ▁which ▁can ▁still ▁be ▁seen ▁in ▁the ▁gard ens ). ▁In ▁ 1 9 3 7 , ▁Hugh ▁was ▁trav elling ▁by ▁rail ▁to ▁meet ▁his ▁f ian c ée ▁M abel ▁Hog arth ▁in ▁Glasgow . ▁He ▁was ▁one ▁of ▁ 3 5 ▁people ▁killed ▁when ▁the ▁Glasgow - Ed inburgh ▁express ▁coll ided ▁with ▁a ▁station ary ▁train ▁at ▁Castle c ary . ▁( See ▁Castle c ary ▁rail ▁acc idents .) ▁His ▁mother ▁Be atrice ▁continued ▁to ▁live ▁at ▁Hill ▁of ▁Tar v it ▁until ▁her ▁death ▁in ▁ 1 9 4 6 . ▁Two ▁years ▁later , ▁on ▁the ▁death ▁of ▁his ▁sister ▁Elizabeth ▁( born ▁ 1 9 0 9 ), ▁the ▁house ▁and ▁the ▁family ' s ▁collection ▁was ▁left ▁to ▁the ▁National ▁Trust ▁for ▁Scotland , ▁with ▁a ▁s izable ▁end ow ment ▁for ▁up keep . ▁Hugh ' s ▁book ▁collection ▁was ▁presented ▁to ▁the ▁National ▁Library ▁of ▁Scotland . ▁ ▁Until ▁ 1 9 7 7 , ▁only ▁the ▁ground ▁floor ▁of ▁the ▁house ▁was ▁open ▁to ▁the ▁public , ▁and ▁then ▁only ▁by ▁appointment , ▁the ▁upper ▁flo ors ▁being ▁used ▁by ▁the ▁Marie ▁Cur ie ▁Foundation ▁as ▁a ▁con val es cent ▁home . ▁ ▁References ▁ ▁External ▁links ▁ ▁National ▁trust ▁for ▁Scotland ▁description ▁Hill ▁of ▁Tar v it ▁on ▁Und isc over ed ▁Scotland