▁a ▁portrait ist . ▁He ▁painted ▁some ▁works ▁in ▁the ▁style ▁of ▁R ams ay , ▁but ▁most ▁were ▁conversation ▁pieces ▁with ▁ ▁out door ▁settings . ▁ ▁His ▁portrait ▁of ▁Robert ▁Burn s , ▁who ▁became ▁a ▁close ▁friend , ▁ ▁is ▁now ▁in ▁the ▁Scottish ▁National ▁Gallery . ▁Event ually , ▁Nas my th ' s ▁strong ▁Liberal ▁opinions ▁off ended ▁many ▁of ▁his ▁arist ocr atic ▁pat rons ▁in ▁a ▁polit ically ▁charged ▁Edinburgh , ▁leading ▁to ▁a ▁falling ▁ ▁off ▁ ▁in ▁comm issions ▁ ▁for ▁port ra its , ▁and ▁in ▁ 1 7 9 2 ▁he ▁completely ▁abandoned ▁the ▁genre , ▁turning ▁instead ▁to ▁landscape ▁painting . ▁He ▁also ▁began ▁painting ▁scen ery ▁for ▁the at res , ▁an ▁activity ▁he ▁continued ▁for ▁the ▁next ▁thirty ▁years , ▁and ▁in ▁ 1 7 9 6 ▁painted ▁a ▁pan or ama . ▁ ▁His ▁land sc apes ▁are ▁all ▁of ▁actual ▁places , ▁and ▁architecture ▁is ▁usually ▁an ▁important ▁element . ▁Some ▁works ▁were ▁painted ▁to ▁illustrate ▁ ▁the ▁effects ▁that ▁ ▁new ▁buildings ▁would ▁ ▁have ▁on ▁an ▁area , ▁such ▁as ▁In ver ary ▁from ▁the ▁Sea , ▁painted ▁for ▁the ▁Duke ▁of ▁Ar gy ll ▁ ▁to ▁show ▁the ▁setting ▁a ▁proposed ▁l ighth ouse . ▁ ▁Nas my th ▁had ▁a ▁ ▁great ▁interest ▁in ▁engineering , ▁and ▁proposed ▁several ▁ideas ▁that ▁were ▁later ▁widely ▁used , ▁although ▁he ▁never ▁pat ented ▁any ▁of ▁them . ▁In ▁October ▁ 1 7 8 8 ,