Dalziel Llewellyn Hammick FRS[1] (8 March 1887 in West Norwood, London, England – 17 October 1966) was an English research chemist.
Along with Walter Illingworth he promulgated the Hammick-Illingworth rule, which predicts the order of substitution in benzene derivatives.
[6] At Oxford, he was a Cadet in the university's Officers' Training Corps, and in July 1911 he was commissioned as a second lieutenant for service with the Gresham's School OTC.
[7] After some ten years as a schoolmaster at Gresham's and Winchester, in 1920 Hammick was elected to a fellowship of Oriel College, Oxford, where he remained until his death in 1966.
The family moved into The Grey Cottage, Old Road, Headington, near Oxford, in 1923, which was also the year of the birth of Hammick's younger daughter, Judith.