▁a ▁doctor ate ▁degree ▁in ▁in organ ic ▁chem istry ▁in ▁ 1 9 2 8 . ▁His ▁book ▁The ▁Scient ific ▁Ex am ination ▁of ▁Pictures , ▁originally ▁completed ▁as ▁part ▁of ▁his ▁chem istry ▁th esis , ▁was ▁soon ▁published ▁intern ation ally . ▁T aking ▁paint ▁samples ▁from ▁a ▁variety ▁of ▁European ▁master pie ces , ▁he ▁studied ▁the ▁chemical ▁make up ▁of ▁synth etic ▁p ig ments ▁used ▁in ▁oil ▁painting ▁over ▁time . ▁After ▁Martin ' s ▁death , ▁the ▁book ▁was ▁considered ▁a ▁" land mark " ▁for ▁its ▁technical ▁analysis ▁of ▁p ig ment ation . ▁Martin ' s ▁heavily ▁technical ▁method ▁of ▁art ▁analysis ▁and ▁formal ▁chemical ▁training ▁were ▁a ▁relative ▁novel ty . ▁He ▁went ▁on ▁to ▁some ▁ren own ▁for ▁his ▁invol vement ▁in ▁forg ery ▁tri als ▁throughout ▁the ▁ 1 9 3 0 s ▁and ▁ 1 9 4 0 s , ▁including ▁the ▁highly ▁public ized ▁Otto ▁W acker ▁trial ▁in ▁ 1 9 3 2 ▁and ▁the ▁Han ▁van ▁Me eg eren ▁trial ▁in ▁ 1 9 4 6 . ▁He ▁lect ured ▁at ▁the ▁University ▁of ▁U tre cht ▁from ▁ 1 9 3 8 ▁until ▁ 1 9 4 7 . ▁Working ▁priv ately ▁in ▁his ▁studio ▁in ▁the ▁H ague , ▁Martin ▁published ▁widely ▁until ▁his ▁death ▁in ▁ 1 9 6 9 , ▁often ▁collabor ating ▁with ▁colle agues ▁from ▁the ▁Del ft ▁University ▁of ▁Technology ▁and ▁the ▁International ▁Institute ▁for ▁Conserv ation . ▁