1 7 ) ▁was ▁a ▁New ▁Zealand ▁chem ist . ▁ ▁Life ▁Born ▁in ▁A uck land ▁on ▁ 6 ▁December ▁ 1 9 1 9 , ▁Hass all ▁was ▁educated ▁at ▁A uck land ▁Gram mar ▁School . ▁He ▁then ▁studied ▁at ▁A uck land ▁University ▁College , ▁gradu ating ▁Master ▁of ▁Science ▁in ▁ 1 9 4 2 , ▁and ▁took ▁a ▁course ▁at ▁A uck land ▁Te ach ers ' ▁Training ▁College . ▁ ▁After ▁lect uring ▁in ▁chem istry ▁at ▁the ▁University ▁of ▁O tag o ▁from ▁ 1 9 4 2 ▁to ▁ 1 9 4 5 , ▁Hass all ▁completed ▁a ▁Ph D ▁in ▁chem istry ▁at ▁the ▁University ▁of ▁Cambridge . ▁In ▁ 1 9 4 8 ▁he ▁was ▁appointed ▁professor ▁of ▁chem istry ▁at ▁the ▁University ▁of ▁the ▁West ▁Ind ies , ▁and ▁in ▁ 1 9 5 7 ▁he ▁moved ▁to ▁the ▁University ▁College ▁of ▁Sw anse a ▁to ▁take ▁up ▁the ▁post ▁as ▁professor ▁and ▁head ▁of ▁chem istry . ▁ ▁He ▁served ▁on ▁the ▁advis ory ▁board ▁of ▁Be e ▁V ital . ▁He ▁started ▁the ▁Greg yn og ▁Natural ▁Product s ▁Sym pos ia ▁in ▁ 1 9 6 7 . ▁ ▁A ▁scholar ship ▁and ▁lecture ▁have ▁been ▁named ▁after ▁him . ▁ ▁Professor ▁Hass all ▁died ▁on ▁ 5 ▁September ▁ 2 0 1 7 . ▁ ▁Works ▁Chem istry ▁in ▁the ▁service ▁of ▁medicine , ▁University ▁College ▁of ▁Sw anse a , ▁ 1 9 5 8 ,